About Heardle Unlimited
A music ear-training game built by people who actually listen to music and care about getting the details right.
How this started
The original Heardle was a simple daily game: guess a song from its intro. It shut down in 2023 after Sony Music acquired the rights. Millions of players lost a daily ritual they genuinely enjoyed.
We built Heardle Unlimited because we were those players. We missed the game, but we also wanted things the original never had: unlimited plays, genre-specific modes, decade filtering, and a difficulty system that actually scales.
This is not a clone or a cash grab. It is a ground-up rebuild using entirely different technology. The original streamed audio from third-party services. We synthesize every snippet in the browser using the Web Audio API. No streaming. No licensing headaches. No broken embeds. Just audio that works everywhere.
What we actually built
Every audio snippet on this site is generated in real time by your browser. We use the Web Audio API to reconstruct approximations of song introductions: chord voicings, filter sweeps, drum patterns, and synth textures. These are not recordings. They are synthesized approximations generated from musical analysis data.
This approach means the game works everywhere: no regional licensing blocks, no buffering, no broken links, no third-party dependencies that can go offline. The audio runs entirely on your device.
The 25 songs in our catalog span 1950s rock to 2020s pop. Each one has a manually configured synthesizer profile: notes, filters, effects, timing. Building a single song profile takes hours of listening, adjusting, and testing against real listener recognition.
What we learned building this
The hardest part of a music guessing game is calibrating difficulty. Too easy and it is boring. Too hard and it is frustrating. We spent months testing with real players to get the progression right.
Our three difficulty tiers were not invented from theory. They were shaped by watching hundreds of people play. Casual players needed more guesses and clearer hints. Expert players wanted 1-second reveals and no hand-holding. The middle tier emerged naturally from players who wanted a challenge but not a wall.
The strategy guides on this site come directly from patterns we observed: which sonic cues help people identify songs fastest, how decade-specific production choices act as fingerprints, why certain genres are easier to recognize from short clips than others.
How we verify our catalog
Every song in the database goes through verification before it appears in any game mode:
- Chart verification: Release year, genre classification, and chart history checked against Billboard archives and Discogs.
- Audio QA: Each synthesized intro tested with multiple listeners. If people cannot recognize it within 16 seconds, the synthesizer profile gets reworked.
- Community corrections: Player feedback submitted through our contact form is reviewed weekly. Confirmed errors get fixed within days and logged in our changelog.
What is available right now
- 8 Decade Modes: 1950s through 2020s, each with era-specific curation.
- 16 Genre Hubs: Pop, rock, hip-hop, R&B, electronic, classical, and more.
- Daily Challenge: A new puzzle every day, shared with all players.
- Unlimited Play: No restrictions, no paywalls, no cooldowns.
We also maintain a growing collection of strategy guides written from actual play data.
What we will not do
- We will never ask you to create an account or hand over personal information.
- We will never charge money to play any mode, including daily challenges.
- We will never track you with cookies or sell data to third parties. Your stats live in your browser only.
- We will never pretend to be affiliated with Spotify, The New York Times, or the original Heardle.
How we write content
Every word on this site: game descriptions, genre explainers, decade histories, FAQ answers, and strategy guides, is written by a human who understands both the music and the game mechanics. We do not use AI to generate content and then publish it unchecked.
If you find an error in any song classification, artist credit, or historical detail, let us know through the contact form. We fix verified mistakes and document the correction in our changelog.