Track Exploder

Track Exploder turns part-predominant barbershop learning tracks into the practice mix you need. Load the tenor, lead, baritone, and bass files for a song. The app extracts the isolated voice from each stereo track, aligns the parts automatically, and gives you a four-part mixer. Use Track Exploder to:

• solo your part or leave it out to sing against the other voices
• adjust each part's level, stereo position, channel, mute, and inclusion
• preview the mix with per-part waveforms
• slow practice audio to 0.5× without changing its pitch
• save reusable mix presets
• export one mix or generate several mixes in bulk
• write WAV and FLAC files while preserving shared source tags

No changes to the app. It no longer requests the Internet permission — Track Exploder does all its work on your device, and now says so.