Desktop app · macOS & Windows · Free

SoloTrainer

Slow it down. Nail the part.

A practice app for musicians. Drop in a file or paste a YouTube link, slow it down without changing pitch, loop the tricky bars, and let Trainer mode ramp you up to full speed.

Latest release All releases & changelog →

solo_take.mp3
Speed 75% Pitch −2 Loop A–B ▶ 1:24 / 3:58

01. What it does

Trainer mode 🚀

Ramp up to speed, pass by pass

Pick a loop and SoloTrainer plays it back faster every time around — 50%, 60%, 70%… all the way up to full tempo. It's the classic way to build a fast solo into your hands. Set your start, target, and step, then just keep playing.

Most requested ▶️

Load straight from YouTube

Paste a YouTube link and SoloTrainer pulls the audio right in — no separate downloader, no sketchy converter site. From a link to looping the solo in seconds.

On-device AI 🎛️

Isolate or mute any instrument

Split a song into separate vocals, drums, bass, and other tracks with AI source separation that runs right on your machine — nothing gets uploaded. Mute the part you're learning and play it yourself, or solo a single stem to hear exactly what it's doing.

🐢

Speed without pitch

Slow a track from 25% to 150% to catch every note — the pitch stays exactly where it was.

🎚️

Pitch without speed

Transpose ±12 semitones to match alternate tunings or sing it in your key — tempo stays put.

🔁

A–B looping

Drop a start and end point right on the waveform and loop a tricky passage until it's locked in.

📍

Section markers

Drop color-coded markers for verse, chorus, and solo, then jump between them with a keystroke.

〰️

Full waveform view

A scrollable waveform with a compact overview, live playhead, and your loop region overlaid.

🎵

Drag & drop any file

Load MP3, WAV, M4A, AAC, or FLAC. Drop it in, click the waveform to seek, and start practicing.

02. Download

macOS

Apple disk image (.dmg)
Download for Mac
  1. Open the downloaded SoloTrainer.dmg.
  2. Drag SoloTrainer into your Applications folder.
  3. First launch: right-click → Open, then confirm. (macOS asks once because the app isn't notarized.)

Windows

64-bit installer (.exe)
Download for Windows
  1. Run the downloaded SoloTrainer…-setup.exe.
  2. If Windows SmartScreen appears: click More info → Run anyway.
  3. Follow the installer, then launch SoloTrainer from the Start menu.

Updates are built in — once installed, SoloTrainer checks for and applies new versions automatically.

03. Handy shortcuts

Transport

  • SpacePlay / Pause
  • Seek ±5s
  • Home EndJump to start / end

Speed & pitch

  • Speed ±5%
  • 19Speed presets
  • + Pitch ±1 semitone

Looping

  • [ ]Set loop A / B
  • LToggle loop
  • CClear loop