SingingRangeTest.com publishes three types of content: tool pages that explain how each singing test works, educational articles about vocal range, voice science, and singing technique, and singer vocal range analyses. This page explains how all three content types are researched, written, reviewed, and maintained.
These guidelines exist because readers deserve to know where information on this site comes from, how it was verified, and what happens when something turns out to be wrong.
Who Writes the Content
All content on SingingRangeTest.com is written by Sam Cooke, the site’s founder and sole author. Sam is a vocal range researcher and singing tools developer with five years of experience studying vocal register science, voice type classification, and singing technique across genres.
There are no anonymous contributors, no outsourced writers, and no unreviewed content published on this site. Every article and tool page carries a named author because every article and tool page has one.
Our Editorial Standard
Every piece of content on SingingRangeTest.com is held to a single test before publication:
Would a singer, music student, or voice teacher who found this page feel it genuinely helped them understand something — or would they feel it was vague, generic, and a waste of their time?
If the answer is the latter, the content is not published. This standard applies equally to a 2,000-word singer analysis and a 400-word tool explanation. Useful depth — not length or keyword density — is the measure.
How Tool Pages Are Written
Tool pages on SingingRangeTest.com cover the following for each test: what the tool measures, how to use it correctly, what the different test modes do, how results should be interpreted, and what the known limitations are.
Each tool page is written based on:
- Direct testing of the tool across browsers, devices, and voice types
- Understanding of the Web Audio API pitch detection that underpins the tools
- Real use cases — the actual questions singers and voice students have about their range
- Known accuracy variables — microphone quality, background noise, vocal warm-up state, and browser differences
Tool pages are written to help users succeed with the test and interpret results meaningfully — not to describe features in marketing language.
How Educational Articles Are Researched
Educational articles on this site cover topics such as voice types, vocal registers, singing technique, breathing, vibrato, whistle register, and how vocal range changes with age and training.
Research for these articles draws from:
- Established vocal pedagogy literature and classical voice training frameworks
- Acoustic science and physiological research on the singing voice
- Music education and choral performance standards
- Practical singing experience and technique documentation
All factual claims are verified before publication. Where established consensus exists — for example, the standard pitch ranges for soprano, mezzo-soprano, contralto, tenor, baritone, and bass — it is reflected accurately. Where expert opinion varies or evidence is limited, the article says so rather than presenting one view as definitive.
How Singer Range Articles Are Researched
Singer vocal range articles are among the most research-intensive content on this site. Vocal range figures are widely misreported across the internet — numbers are copied without verification, extreme notes are cited without context, and the critical difference between a singer’s working range and their documented extreme range is routinely ignored.
Our research process for singer range articles:
Step 1 — Source identification. We identify the singer’s studio discography, verified live recordings, and any performances known to feature their upper or lower range extremes.
Step 2 — Cross-referencing. Range figures are never drawn from a single source. We cross-reference multiple recordings to confirm that a cited note appears reliably — not as a one-time anomaly in an unusual recording context.
Step 3 — Range distinction. We clearly distinguish between a singer’s comfortable working range — the notes used regularly across their recorded output — and their documented extreme range — the lowest or highest notes captured in known recordings. Both are noted where relevant, but they are never conflated.
Step 4 — Dispute disclosure. Where a singer’s range is genuinely disputed — due to conflicting sources, live vs. studio differences, or vocal changes over a career — the article discloses the dispute rather than presenting a single figure as authoritative fact.
Our Policy on AI-Assisted Content
SingingRangeTest.com may use AI writing tools as part of the content drafting process. We are transparent about this.
However, every piece of content published on this site is:
- Reviewed and edited by Sam Cooke personally before publication
- Fact-checked against verified sources — not accepted as drafted
- Rewritten wherever the draft contains inaccuracies, vague claims, or generic filler
- Held to the same editorial standard as content drafted without AI assistance
We do not publish raw AI output. The standard is the quality of the final published page — not the method used to produce the first draft.
How Content Is Updated
Vocal science research evolves. Singer recordings extend documented ranges. Tools are improved. Articles occasionally contain errors that need correcting.
Content on this site is updated when:
- A tool’s methodology or accuracy characteristics change
- A new recording meaningfully extends a singer’s documented range
- A factual error is identified — by a reader, an expert, or internal review
- An article becomes significantly out of date
Updated articles display a visible “Last updated” date alongside the original publication date.
Corrections Policy
If you find a factual error anywhere on this site — a singer’s range listed incorrectly, a technical claim about voice science that does not hold up, a tool explanation that is inaccurate — please report it via the Contact page.
All correction requests are reviewed personally. Verified errors are corrected on the relevant page with a correction note where the change is material. We do not quietly delete or rewrite content to conceal past mistakes.
What We Do Not Publish
- Singer vocal range figures presented as fact without cross-referenced source verification
- Health or medical claims about the voice not grounded in established science
- Content that exists only to target a search keyword with no educational value
- Copied, scraped, or substantially unedited content from other sources
- Tool descriptions that overstate what browser-based pitch detection can measure
Related Pages
- About the Author — Sam Cooke’s background and research standards
- About Us — the site’s mission and purpose
- Testing Methodology — how the singing range tests measure vocal registers
- Accuracy & Limitations — what affects test accuracy and what the tools cannot do
- Contact — submit corrections or feedback
These editorial guidelines are written and maintained by Sam Cooke, founder of SingingRangeTest.com.
Last updated: June 2026.