The CSound API for Android has been around for a while now. A few years ago I built an app called EtherSurface (my first and only Android app): <a href="https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=com.zebproj.etherpad" rel="nofollow">https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=com.zebproj.et...</a>