A free app for Android, by NETIGEN.

Best Composer is a free application for creating your own music samples. By selecting from a wide range of sound samples, you can create an original composition in a short time. In the app, you can find 103 different categories, such as: drum, guitar, bass, piano, saxophone, violin, flute, harp, viola, and more.

Each category contains several sounds. With the left panel, you can choose the sounds for the given composition and listen to them. It’s possible to add your own sound files in “My sounds” if they are no longer than 5 seconds (only wav, mp3 and ogg formats are allowed). The upper panel allows to set the speed, save, and load the composition project and listen to your compositions. Use the export button to make your own sound files based on the composition project.