Music apps aren't common on the Android side due to latency issues, but it's getting better. Today Image-Line released their popular FL Studio Mobile app on the Play Store for $19.99. https://play.google.com/store/apps/details?id=com.imageline.FLM Not bad, considering it has a megabyte extra compared to Cubasis, which is what I use on my iPad. That costs $49.99 too. But I have used FL in the past and really liked it.