SingingRangeTest.com publishes browser-based singing tools, vocal education resources, and singer vocal-range research. These Editorial Guidelines explain how we research, write, review, update, and correct that content.

Our goal is to publish material that is useful, accurate, transparent about uncertainty, and clear about the difference between direct measurement, interpretation, and opinion.

All editorial content is written, reviewed, or personally approved by Sam Cooke, founder of SingingRangeTest.com. You can learn more about his role and research focus on the Author page.

Our Editorial Principles

Every page should serve a clear user need.

We do not publish content simply to reach a target word count, repeat keywords, or reproduce information already available elsewhere without adding useful context.

Our editorial standards are built around six principles:

Accuracy — factual, technical, scientific, and numerical claims should be checked against appropriate evidence.
Usefulness — content should help readers understand a topic, use a tool, interpret a result, or make a better-informed decision.
Transparency — uncertainty, limitations, assumptions, and disputed information should be stated clearly.
Originality — pages should add value through research, explanation, testing, synthesis, comparison, or first-hand work.
Accountability — errors can be reported, reviewed, and corrected.
Editorial independence — advertising, affiliate relationships, or commercial partnerships do not determine factual conclusions.

Our Source Standards

Not all sources carry the same weight. The type of source we prefer depends on the claim being made.

Preferred Primary and Authoritative Sources

When relevant and available, we prioritize sources such as:

peer-reviewed research;
academic journals;
university publications;
recognized professional or scientific organizations;
established textbooks and reference works;
primary interviews;
official artist statements;
original studio recordings;
documented live performances;
official product or technical documentation.

These sources are especially important for scientific, anatomical, acoustic, health-related, historical, and technical claims.

Reputable Secondary Sources

We may also use:

established music publications;
professionally edited reference resources;
credible biographies;
recognized educational institutions;
reputable journalism;
well-supported specialist publications.

Secondary sources may help provide context, summarize established information, or support claims where primary sources are unavailable.

Sources We Use Cautiously

Some sources can be useful for discovering a claim but may not be strong enough to establish it on their own.

These include:

personal blogs;
fan sites;
crowd-edited pages;
forums;
social media posts;
unsourced vocal-range databases;
user-submitted claims.

When these sources identify something worth investigating, we try to verify it through stronger evidence before treating it as established fact.

Sources We Do Not Treat as Evidence

We do not treat the following as sufficient factual evidence by themselves:

copied SEO articles;
anonymous content-farm pages;
automatically generated summaries;
AI-generated responses;
unsourced numerical claims;
pages that simply repeat another website without identifying evidence.

AI output, in particular, is never treated as a factual source.

How Tool Pages Are Researched and Reviewed

Tool pages are written around the tool that actually exists on the site.

Before publishing or materially updating a tool page, we aim to review:

the tool’s purpose;
user inputs;
validation rules;
expected outputs;
calculation or detection logic;
error states;
likely edge cases;
user workflow;
mobile usability;
accessibility considerations;
known limitations;
the wording used to describe results.

A page should not claim that a tool measures something if it only estimates or infers it.

For example, there is an important difference between:

detecting a frequency;
converting that frequency to a musical note;
calculating a vocal range from detected notes;
estimating a voice classification from those results.

Those differences should be reflected in the language used on the page.

Detailed technical information about how our browser-based voice tools operate belongs in our Testing Methodology.

How Educational Articles Are Researched

Educational articles are researched according to the subject rather than produced from a fixed template.

A typical process includes:

identifying the user’s actual question or problem;
defining the relevant concepts;
reviewing appropriate sources;
comparing potentially conflicting information;
drafting the explanation;
checking important factual and technical claims;
reviewing the page for clarity, usefulness, safety, and unnecessary repetition;
adding citations where they materially help support a claim;
completing a final editorial review before publication.

We pay particular attention to subjects where oversimplification can mislead readers, including:

vocal range;
tessitura;
voice classification;
registers;
vocal anatomy;
vocal health;
pitch and frequency;
range-development claims;
comparisons between trained and untrained singers.

General note ranges and classifications may be useful educational frameworks, but they should not be presented as fixed biological rules that apply identically to every person.

When We Cite Sources

Not every basic musical definition requires an external citation.

However, we aim to cite or otherwise substantiate claims when the evidence matters to the reader’s understanding or safety.

This is especially important for:

medical or anatomical claims;
vocal-health guidance;
scientific or acoustic claims;
statistics;
numerical prevalence claims;
historical facts;
disputed singer-range claims;
precise vocal-frequency norms;
claims about training outcomes;
claims where expert agreement is limited.

A citation should support a meaningful claim. We do not add external links merely to make a page appear well researched.

Where stronger primary or authoritative evidence exists, we prefer it over a convenient secondary summary.

How Singer Vocal Range Articles Are Researched

Singer vocal-range research requires a different process from ordinary educational content because published range figures often conflict.

Different websites may include different material, such as:

studio recordings;
live performances;
falsetto or head voice;
backing vocals;
unusual vocal effects;
isolated extreme notes;
questionable or misidentified audio.

For that reason, we do not assume that a precise range written on another website is automatically correct.

1. Evidence Identification

We first identify the evidence behind the claim where possible.

Useful evidence may include:

an identifiable note in an official studio recording;
a clearly documented live performance;
audio or video with reliable provenance;
a primary interview;
an official published statement;
a reputable secondary source that explains its evidence.

2. Note Verification

A clearly identifiable note in a reliable recording may be enough to document that the note occurred.

That does not automatically mean the note represents the singer’s normal or comfortable range.

We therefore distinguish between:

documented extreme notes and representative working range.

3. Working Range vs Documented Extremes

A singer may produce an unusually low or high note once without using that part of the voice regularly.

When discussing a representative range, we look for broader evidence across recordings or performances where possible.

A single extreme should not automatically define a singer’s everyday vocal range.

4. Voice-Type Classification

Voice type and vocal range are not the same thing.

This distinction is especially important for contemporary singers, who may not fit neatly into classical voice categories.

When classification is uncertain or debated, we may use wording such as:

commonly described as;
often classified as;
shows characteristics associated with;
classification is debated;
does not fit neatly into a traditional category.

We avoid presenting subjective classifications as indisputable facts.

5. Disputed Evidence

When credible evidence conflicts, we aim to say so.

We would rather publish an appropriately qualified conclusion than create false certainty around a singer’s exact range.

Singer Range Source Priority

When evaluating singer-range claims, we generally give the greatest weight to:

identifiable notes in official recordings;
clearly documented live performances;
audio or video with verifiable provenance;
primary interviews or official statements;
reputable music publications;
credible specialist analysis.

Fan databases, forums, social posts, and unsourced vocal-range sites may help identify a claim worth investigating, but we do not treat them as conclusive evidence on their own.

Originality and Added Value

We do not consider a page complete simply because information can be assembled from other websites.

A page should add useful value through one or more of the following:

first-hand tool testing;
clearer explanations;
comparison of conflicting evidence;
original organization of complex information;
practical interpretation;
relevant examples;
source synthesis;
documented singer evidence;
technical verification;
useful tables or structured comparisons;
identification of limitations or uncertainty.

Consistent page structures may be used for usability, especially across large content collections, but each page still requires topic-specific research and editorial review.

Changing a name, a few numbers, or a keyword inside the same generic template is not our standard for a finished page.

AI-Assisted Content Policy

AI tools may be used during parts of the editorial workflow.

Possible uses include:

brainstorming;
outlining;
drafting;
reorganizing information;
editing;
identifying areas that require additional research;
helping summarize material that has already been reviewed.

AI-generated output is not treated as a source or evidence for factual claims.

Before publication, content is reviewed and edited for:

factual accuracy;
relevance;
technical correctness;
unsupported claims;
duplicated ideas;
awkward or generic language;
citation needs;
safety concerns;
consistency with the actual tool or topic.

We do not intentionally publish raw AI output as finished editorial content.

The purpose of using any writing or research tool is to improve the final work—not to replace source verification, editorial judgment, or human responsibility.

Vocal Health and Medical Content

Vocal-health topics require additional care.

SingingRangeTest.com provides educational information, not medical diagnosis or individualized treatment.

For content involving vocal health, anatomy, strain, injury, or symptoms, we aim to:

rely on appropriate qualified sources;
avoid diagnosing conditions;
avoid guaranteeing recovery or improvement;
distinguish general education from medical advice;
avoid encouraging painful or unsafe vocal exercises;
make limitations clear;
recommend appropriate professional evaluation when persistent symptoms may require it.

Users should not force painful or significantly uncomfortable notes simply to increase a vocal-range test result.

Our broader safety information is available in Vocal Health Tips and Accuracy & Limitations.

Editorial Independence and Commercial Relationships

SingingRangeTest.com is independently operated.

The website may use advertising, affiliate relationships, sponsorships, or other forms of monetization.

Commercial relationships do not determine:

tool results;
singer-range conclusions;
voice classifications;
scientific explanations;
factual claims;
editorial corrections.

Where a commercial relationship is relevant to a recommendation or piece of content, we aim to disclose it appropriately.

We do not change factual conclusions simply because an advertiser, partner, artist, product provider, or other commercial party would prefer a different result.

Conflicts of Interest

If a financial, ownership, partnership, sponsorship, free-product, or other material relationship could reasonably affect how readers interpret a recommendation, we aim to disclose that relationship.

Transparency is more useful than pretending potential conflicts do not exist.

Corrections Policy

Readers are encouraged to report errors.

Possible corrections include:

incorrect singer notes;
unsupported range claims;
factual errors;
technical mistakes;
outdated information;
broken tools;
misleading explanations;
incorrect links.

When a report is received, we review the relevant evidence.

If an error is confirmed, the page may be corrected.

A visible correction note may be added when a change materially affects the meaning or conclusion of the page.

Examples of material corrections can include changes to:

a singer’s documented range;
a significant voice classification;
an important scientific claim;
methodology information;
tool-accuracy statements;
health or safety guidance.

Small spelling, grammar, formatting, or broken-link fixes generally do not require a formal correction notice.

We do not intentionally preserve known factual errors simply to avoid changing previously published content.

You can report a possible error through our Contact Us page.

How and When Content Is Updated

Existing pages may be reviewed when:

stronger evidence becomes available;
a tool changes;
testing methodology changes;
research develops;
a factual error is identified;
an article becomes outdated;
a reader reports a credible issue;
the page no longer reflects the site’s current standards.

A meaningful update involves reviewing or changing the substance of the page.

Changing a visible “Last updated” date without a meaningful editorial review is not considered a substantive update.

Where supported by the site’s publishing system, pages may display publication and/or last-updated information so readers can better understand when the material was reviewed.

Before Publication

Although the exact process varies by page type, our general pre-publication workflow is:

Research → Draft → Claim review → Source review → Safety and limitation review where relevant → Internal consistency check → Human editorial review → Publish

Tool pages additionally require review against the actual functionality of the tool.

Singer-range pages additionally require review of the evidence supporting reported notes and classifications.

Health-related pages receive additional scrutiny around safety, sourcing, and medical limitations.

What We Do Not Publish

We aim not to publish:

copied or scraped content;
fabricated sources;
invented credentials;
fake quotations;
unsupported medical diagnoses;
guaranteed vocal-health outcomes;
deliberately misleading tool claims;
AI output presented as factual evidence;
singer-range claims invented without evidence;
pages created only by swapping names or keywords inside thin templates;
false testimonials;
fabricated testing results.

If we cannot support a claim appropriately, the better option is to qualify it, remove it, or continue researching it.

Who Is Responsible for These Standards?

SingingRangeTest.com is created and maintained by Sam Cooke, who is responsible for the site’s editorial review, tool documentation, content updates, and correction process.

You can read more about his work on the Author page, or learn more about the website itself on About Us.

For technical details about the tools, read our Testing Methodology.

For information about what can affect tool results, read Accuracy & Limitations.

Questions, Corrections, or Feedback

If you believe a page contains an error, an unsupported claim, outdated information, or a technical problem, please contact us through the Contact Us page.

We welcome specific evidence that can help us improve an article or tool.

You can also follow SingingRangeTest.com on our official Facebook page.

Maintained by Sam Cooke
SingingRangeTest.com