I just released 0.2.0 version of PunKt: live music coding library for Kotlin, now with effects support 🎶🎹🎛️ You can use it to make beats straight from Intellij, check also longer demo:

Nice library! Can i use it in a android app?

For now - no... It uses external SuperCollider server as audio engine, there is this port https://github.com/glastonbridge/SuperCollider-Android but I have no experience with it