Four-track overdubbing
Record each part separately and build a song step by step. Four tracks are a practical fit for a demo with guitar, bass, vocals and a simple rhythm.
4trMTR
Four-track recording for your browser and iPhone. Layer guitar, bass, vocals and rhythm one track at a time, and turn song ideas, band demos and home-recording sketches into music with simple controls.
What you can do with 4trMTR
4trMTR helps you get an idea recorded before opening a full DAW. Start with a rhythm or chord part, then layer other instruments and vocals across up to four tracks.
Try it in your browser
4trMTR WEB needs no installation. Try multitrack recording in a computer browser, including on a modest PC. Performance depends on your setup.
Record on your iPhone
Capture a phrase as it comes to you, add a part to a practice recording, or make a rough demo to share with your band.
Export WAV audio
Export your recording as an audio file, ready for level adjustments, editing or sharing.
How to overdub four tracks in your browser
4trMTR WEB offers recording, playback, track levels, panning, mute, solo, project saving and WAV export. Start with a short recording and playback check, then add more tracks.
- Record a rhythm or chord part on the first track to establish the song.
- Play that track while recording another instrument or vocal on the second track.
- Check the balance with LEVEL, PAN, MUTE and SOLO.
- Save your project as you work, then export a WAV file when you are ready.
Browser recording depends on your device, browser and microphone settings. Make a short test recording before an important take.
Open 4trMTR WEBAdvertisement
Four-track recording on iPhone
The iPhone app is designed for recording with the device you have close at hand. Try the workflow in your browser, then explore the app for quick recordings on your iPhone.
Capture ideas, overdub parts on a vocal-and-guitar performance, or prepare a rough demo for your band when you want to record and layer a few parts straight away.
View on the App StoreBuild a band demo on your own
A four-track limit makes it easier to decide what to record first. Here is one way to divide the parts.
Track 1
Record a rhythm, chords or a guide guitar part to establish the song.
Track 2
Add bass or another low part to support the rhythm and harmony.
Track 3
Record the main vocal, melody or lead guitar.
Track 4
Add backing vocals, another guitar, effects or an arrangement idea.
Web app or iPhone app?
Both focus on recording and layering four tracks. Choose the version that fits where you make music.
Choose the web app
Try overdubbing on a computer, record without installing software, or work on a Windows PC with a compatible browser and microphone input.
Choose the iPhone app
Record quickly, take ideas down while out and about, or use a dedicated app at your practice space.
Adjusting loudness after recording
Once you have layered your parts, consider the overall level. If your recording feels quiet or needs a more consistent listening level before sharing on YouTube or social media, LUFS can be a useful reference.
LUFS SLIDER helps you check and adjust audio loudness. A browser version, LUFS Slider WEB, is also planned.
Read the LUFS guideFrequently asked questions
How can I try 4trMTR?
Open 4trMTR WEB in your browser without installing software. For a dedicated iPhone app, visit the App Store listing.
Can I use it on Windows?
Yes, the web version can run on a Windows PC with a compatible browser and microphone input. Make a short test recording before an important session.
Can I use more than four tracks?
4trMTR is built around four tracks. Keeping the track count small helps keep recording song ideas and rough demos straightforward.
Can I export my recording?
4trMTR WEB supports WAV export. Use the exported file for further editing, loudness adjustment or sharing.