A free program for Android, by Demetrius Sour.

DJ Sound FX is an app that makes it easy for you to mix music in real-time and play it in your own music player.

With it, you can mix two songs and add effects such as loop or fade. You can also play the resulting mix in real-time and save it to your mobile device.

The app is compatible with the Android operating system and can be used on smartphones and tablets. It is a simple and user-friendly app, so even if you have no experience in mixing music, you can still use it and get a good result.