Sundog Song Studio

I'm usually a cat person but I'll make an exception for Sundog.
Sundog Song Studio is a piece of software that will help you write songs. The title gives it away really. It's like a really smart combination of lots of bits of software I've used in the past. You pick a key, choose some chords and then add melody and bass around the chord structure. You can also add rhythms. It's a case of tweaking until you're happy and you can then export a MIDI file to re-voice and add to in your DAW.
I have also been linking it to my MU100 and RM1x with great results.
Considering I'm running it as a Windows executable on Wine in Ubuntu Studio it works perfectly. It normally runs on Windows and Mac so if you're a musician in need of a backing band it's a fantastic addition to your musical arsenal.