Audio sequencer for musicians and sound artists. Jackbeat is an open source cross-platform audio sequencer that was designed especially for for musicians and sound artists.
Jackbeat Features:
1. Drummachine interface with animations for easy and playful editing
2. Built for both composition and live setups with high interactivity needs
3. Easy to use but yet powerful by connecting with other applications using JACK and OSC
4. Loads and saves .jab files, Jackbeat's xml+tar open file format
5. Supports ALSA, CoreAudio, PulseAudio, JACK and ASIO

Requirements:
* JACK Audio Connection Kit
* GTK+-2.0 toolkit
* sndfile library
* libxml2 library
* libsamplerate library

The license of this software is Free, you can free download and free use this music composer software.