John Mayer
Music Researcher & Vocal Range Analyst | Founder, VocalRangeTester.com
My name is John Mayer. I’ve spent the last five years researching vocal music, studying how the human voice works, and analyzing the documented ranges of singers across every genre — from classical opera to rock to contemporary pop.
I’m not a vocal coach, and I don’t claim to be. What I am is someone who became genuinely obsessed with the gap between curiosity and knowledge when it comes to the human voice. Most people who want to understand their vocal range — or why a singer can do something that seems impossible — don’t have easy access to clear, honest information. That’s the gap VocalRangeTester.com was built to fill.
What I Research
My work on this site covers three main areas:
Vocal range analysis. I research and document the vocal ranges of well-known singers based on their recorded output — studio albums, live performances, and verified recordings. Every range figure I publish is cross-referenced across multiple sources. Where data is disputed or uncertain, I say so rather than presenting a single number as fact.
Voice science and education. I write about how the vocal cords produce pitch, what affects range, why voices change with age, how breathing technique connects to high notes, and what concepts like tessitura, passaggio, and voice type actually mean in practice. My goal is always to translate the technical into the understandable.
Tool methodology and accuracy. Every tool on VocalRangeTester.com uses browser-based pitch detection. I document how each tool works, what it can reliably measure, and — importantly — where its limitations are. A result from a browser tool is not the same as a professional vocal evaluation, and I’m transparent about that on every relevant page.
Why I Built This Site
The tools that existed when I started researching this topic had a consistent problem: they gave you a result with no context. You’d get “your range is E2 to C5” and the page would offer nothing else — no explanation of what that means, no comparison to typical ranges, no voice type guidance, no indication of whether the measurement was even reliable.
I wanted something different. A place where the measurement came with the meaning. Where someone who had never thought about their voice before could find out what their range is, understand what it tells them, and leave knowing more than when they arrived.
That’s what VocalRangeTester.com is built to be.
My Research Standards
I hold every article on this site to the same standard I’d apply to any research I took seriously:
- Singer range data is drawn from documented recordings, not estimates or secondhand sources
- Scientific claims about the voice are grounded in established vocal pedagogy and acoustic science
- Tool limitations are disclosed clearly — I don’t overstate what a browser-based pitch detector can do
- When I don’t know something or when the research is genuinely unclear, the article says so
- Content is updated when new information changes what was previously published
If you find an error — a singer’s range listed incorrectly, a tool behaving unexpectedly, a claim that doesn’t hold up — I want to know. Use the Contact page and I’ll review it promptly.
Tools I’ve Built
The tools on this site reflect five years of thinking about what people actually need when they want to understand their voice:
- Vocal Range Calculator — measure your lowest and highest singable notes
- Voice Type Classifier — identify your likely voice category
- Pitch Accuracy Analyzer — test how consistently you hit your target notes
- Deep Voice Test — measure how low your voice reliably goes
- Singer Comparison Tool — see how your range compares to known artists
- AI Voice Analysis — a deeper look at your vocal characteristics
All tools run entirely in your browser. No audio is recorded, stored, or sent anywhere.
Get in Touch
Questions, corrections, and feedback are always welcome.
Contact: vocalrangetester.com/contact
Published articles: vocalrangetester.com/blog
How the tools work: vocalrangetester.com/how-it-works
John Mayer is the founder and sole author of VocalRangeTester.com. All articles, tool pages, singer range analyses, and educational content on this site are written and maintained by him.
Last updated: June 2026.
John Mayer is a vocal analysis and music education writer specializing in vocal range testing, voice type analysis, pitch recognition, and singing improvement tools for singers, musicians, performers, and beginners. He creates practical content focused on vocal training, singing techniques, and voice analysis tools to help users better understand and improve their vocal abilities.