# Play any song the moment you Hear it. > YouTube to chords for guitar, bass, ukulele, mandolin or piano, in time with any song, lyrics underneath, six stems to mix. Any key, any speed. No ads. Source: https://chordlens.app/ Now playing on any YouTube video [Get chords from YouTube](https://chordlens.app/youtube-to-chords) for any song: real chord shapes in time with the music, the words underneath, and every instrument on its own fader. No account. No ads. [Add to Chrome — it’s free](https://chromewebstore.google.com/detail/chord-lens-ai-youtube-cho/iedoccahfccciahmalgjakejfmbnahnp) [Try Pro free for 14 days · no card](https://chordlens.app/studio/upgrade?trial=start) 02 / 06 · Stems ## One song in. Six stems out. scroll to pull it apart one song, six faders Vocals, drums, bass, piano, guitar and everything else, each on its own fader. Mute the singer and the band keeps playing. Solo the bass and learn the line. // Your song in six stems out 6-stem split Keep the Tape Running (Live Session) YouTube · 4:35 split into 6 stems - Vocals - Drums - Bass - Piano - Guitar - Other Split done · 6 stems Ready 03 / 06 · Key and speed ## Your key. Your speed. same recording! Every chord on the page re-spells itself as you move the key. Slow it to half speed without the chipmunk. −2 semitones C → B♭ · every chord re-spelled, every shape redrawn 0.75 × Same pitch, slower. Loop the bar you keep missing. 04 / 06 · Read it your way ## Three ways to read it. pick yours - **The words, with the chords on them** Print it, or follow along as each line lights up. - **The bar grid** Four beats a box. Count it in. - **Diagram mode** The shape to play, on guitar, bass, ukulele, mandolin or piano. On your phone ## Put it on your phone. no app store needed ### iPhone 1. Open chordlens.app/studio 2. Tap Share Not there? On iOS 26, tap ⋯ first. 3. Choose Add to Home Screen 4. Tap Add ### Android 1. Open chordlens.app/studio 2. Tap Menu 3. Choose Install app Some phones say Add to Home screen. 4. Tap Install [Open Chord Lens to install](https://chordlens.app/studio?install) Safari only: Chrome on iPhone can’t add apps. Once added, you sign in once more inside the app. Chrome on Android. Once added, it opens full screen like an app. Scan to install on your phone ![QR code for chordlens.app/studio?install](https://chordlens.app/assets/landing/install-qr.svg?v=1) Point your camera here. Chord Lens opens with the install steps. - **Full screen** - **Home Screen** [**On a Mac?** Get the desktop app](https://chordlens.app/download) 06 / 06 · FAQ ## Good questions. we hear these a lot ### Still stuck? Open the Studio and send us a note with Feedback in its sidebar. A person reads every one. [Send feedback](https://chordlens.app/studio?feedback) ### Do I need an account? Not for the extension. Install it, open a video, click Chords. The Studio asks you to sign in with Google; the extension never does. ### What’s free, and what do Premium and Pro add? Chord Lens is free to use. Premium and Pro lift the limits on splitting a song into stems, and give you longer songs. Chords and lyrics stay free on every plan. Key and speed are free in Chrome and, once you sign in, in the Studio, for the whole song up to your plan’s song-length limit. ### Can I use Chord Lens on my own files, or only YouTube? Both. The Chrome extension works right on the YouTube video you’re watching (see [YouTube to chords](https://chordlens.app/youtube-to-chords)), listening to the song as it plays. To split stems, upload your own audio in the Studio (MP3, WAV or M4A, up to 50 MB). Premium exports stems as MP3 and Pro adds WAV, for your own study and practice. ### What are the six stems? Vocals, drums, bass, piano, guitar and other (everything else), each on its own fader, so you can mute the singer, solo the bass, or keep only the drums. ### Does it record my audio or my screen? No. The extension captures nothing from your browser and uploads none of your audio. It sends our server the YouTube video ID, and a sign-in token only if you sign in. ### Can I cancel anytime? Yes. Cancel whenever you like; you keep the plan until the end of the period you paid for, then go back to Free. ### Is there a free trial? Yes: 14 days of Pro, with no card. It’s for Free accounts that have never paid, once per account and email; Premium has no trial. Add a card during the 14 days and Pro carries on monthly at today’s price. With no card, day 14 brings you back to Free, and nothing is deleted. [Start the trial](https://chordlens.app/studio/upgrade?trial=start) ### Which devices does it run on? Chrome on any computer (the extension), the Studio in any browser, and Chord Lens for Mac (M1 and later). On iPhone and Android you can [install it as an app](https://chordlens.app/#app) from Safari or Chrome; Windows and Ubuntu apps are coming soon. ### Does changing the key change what I hear? Yes. The recording moves to the new key while the tempo stays put, and the chart names the shapes you now play. A capo changes your fingers; the key changes the sound. Use both. ### What can I do with Chord Lens? Play any song with its chords in time, the words underneath and the song’s sections, in the Chrome extension or the Studio. Change the key, slow it down without changing the pitch, loop any bars, and split a song you upload into six stems to mix. ### What is a stem splitter, and how does it work? A stem splitter pulls a finished song apart into its parts. Chord Lens splits a song you upload into six stems: vocals, drums, bass, piano, guitar and other. The split runs in your browser, on your own computer. ### How clean is the separation? Clean enough to play over on most songs, and vocals, drums and bass usually split best. Parts that share the same space, heavy distortion and old mono recordings bleed more. It’s made for practice, not for a studio master. ### Is it legal to isolate stems from copyrighted music? Practising and studying a song yourself (learning it, transcribing a part, playing along) is broadly considered fair use under US copyright law, and similar rules apply elsewhere. That is what Chord Lens is for. Stem downloads on Premium (MP3) and Pro (WAV) are for your own personal study only, not to share or publish. To publish a cover, use the original audio under YouTube’s licensing, or get a sync license. ### Which browsers does it work in? The extension runs in Chrome. The Studio opens in any browser, and splitting a song needs a computer with Chrome or Edge. ## Pick it up. Press play. [Add to Chrome — it’s free](https://chromewebstore.google.com/detail/chord-lens-ai-youtube-cho/iedoccahfccciahmalgjakejfmbnahnp)