Question: What made you jump into Android all of a sudden? Why not iOS or other mobile platforms?
Answer: Maxim Petrov: I've never intended to do any mobile startup, but I got an Android phone first (Nexus One), not iPhone, so I started to look into this platform first. The lack of Google's own music app was obvious. I think if it was iPhone, not Nexus One, I could go developing for iOS instead. Though, you know, there are a lot more really good apps that already exist for iOS (and existed a year ago), all niches are filled, Apple is pretty restrictive (I don't think PowerAMP iPhone version would have ever been accepted in the Appstore). You can jump into Android quickly - just download the SDK, install adb driver, and you can develop - for your phone, for your friends (first beta testers), it's much easier to start on Android, but I can only compare to what I've read about iOS development as I haven't developed anything for iPhone.