Riff Studio: Music Practice

brAzzi Labs

About this app

Made by musicians, for musicians.

Turn any song on your device into a focused practice session.

Riff Studio is a music practice player built for musicians who learn by listening, repeating, and playing along. Slow down a difficult passage without changing pitch, transpose a song without changing speed, and loop the exact phrase until it clicks.

Practice on the beat

Riff Studio analyzes each song on your device, beat by beat and bar by bar. Seek controls, A–B loop points, and section boundaries can snap to the beat grid. Enable a full-bar count-in before a loop or section jump, with digital, hi-hat, or sticks sounds.

Build precise loops

Set A and B directly on the waveform and repeat any passage with clean, gapless timing. Pinch to zoom from the full song down to a single bar, then drag or nudge boundaries exactly where the phrase begins and ends.

Map the whole song

Mark and name sections such as Intro, Verse, Chorus, Riff, Solo, and Outro. Jump between sections, edit their boundaries, or loop the section under the playhead with one tap.

Shape the playback

• Slow down or speed up from 25% to 250%.
• Shift pitch up or down by 12 semitones and fine-tune by cents without changing speed.
• Choose quick pitch and speed controls.
• Keep pitch and speed settings for each song in each setlist.

Stay in the music

• Follow synchronized lyrics with the current line highlighted.
• Build and reorder setlists, and add multiple songs at once.
• See what has played, what is playing, and what is next in the queue.
• Return to your last practice point with Quick Jump.
• Keep the screen awake while you play.
• Save adjusted audio as an MP3.

Local audio, on-device analysis

Your songs stay on your device. Beat detection runs on-device; your audio is not uploaded. Riff Studio reads synchronized lyrics embedded in supported files and can use a user-connected, LRCLIB-compatible provider when embedded lyrics are unavailable.

Riff Studio works with supported audio files stored on your Android device.

Ratings and reviews

I really like this app, I've been using it for years and it works very well when it comes to music pitching and looping. As of late though, the app has been bugging and doesn't allow songs to loop as they should (they only play once and they stop despite the fact that it's ON loop), and I can't move around on certain tracks. If it got fixed, this app would go back to being five stars. overall though, it's worth getting!

I just got the 6.0.138 update, and I'm sad to say my favorite feature has gone "almost missing". That feature is the large tempo control being on the main "play" page. Using the "vertical spinner" or "slot machine" type control was easy to touch with my fingers to change the tempo. Now it's changed it to a sub page where you first have to click on a button. Then you have to touch the slider control ever so carefully and read TINY little numbers. Please bring the old UI back as an option!

Amazing for fiddling with songs. 8/27/26 Edit: Okay, I like the idea and concept of this new update, but this is either a huge bug. Or a very counterproductive feature. The AB change. Why is it storage dependent? I have 2GB free and it's telling me I don't have enough storage to loop 10s of a 3MB song. I'm curious as to why such a system was needed. I'm not sure if this is a bug, because others are saying it works great. meaning it IS storage dependent. So we have to delete stuff to loop 10s?