Renoise

Renoise is a music edition tool that givs you the possibility to create all kinds of high quality samples, loops and sound effects.

The program is compatible with any other audio application you have installed and with any audio synthesizer.

Create samples, mixes, add effects, VST music instruments to compose your own audio files.

Renoise offers lots of composition possibilities, although it is for advanced users, because novice users will find it very difficult.

Finally, it also includes a tutorial for beginners.