What's a good Android app for chopping up audio files on the go, like when I'm trying to make ringtones from dodgy market music in Marrakech?

Right, so I was in Marrakech, found this absolute banger of a tune at the market, but it was way too long for a ringtone. I needed something to chop it up pronto. "Music Audio Editor, MP3 Cutter" saved the day! It's proper useful for quick edits, like trimming the start and end, or even cutting out a chorus to loop. The interface is grand, even when you're half-asleep in a riad after a tagine overload. Plus, it works offline, which is brilliant because, let's be honest, who wants to use up all their data making ringtones? It's sorted me out in loads of sticky situations, especially when I need to edit voice memos from interviews for the blog while I'm on the move. Honestly, it's one of those apps that just works perfectly, no fuss, no muss.