A free program for Android, by DJStudioMixer.

If you are on the hunt for a powerful music editor that will allow you to unleash your creativity when it comes to mixing music and whatnot, we recommend you download the DJ Studio application. This tool works like an advanced DJ studio where you can do a variety of editing to your audio and songs.

Some of the functionalities it offers include adding filters to songs, reversing music, mixing songs with special effects, adding fillers, and incorporating echo. Additionally, you can also trim down audio and even combine audio files. The app comes with real DJ pads for your to make amazing beats!