LittleGPTracker (LGPT), is a tracker mainly for portable system such as GP2x and PSP. But there is also a version for Windows, Mac OSX and Debian. It's a bit similar to LSDJ. So use a similar shortcuts and interface.

LGPT, supports 8 channels in monophonic 16Bit/44.1Khz stereo sample. So it's similar to modules trackers in this way. Basically, you need a sample pack, assign each sample to an instrument and after that, your ready to compose your song.

It also support MIDI, but you need this link

See also