Space ChilloutDeep Data Loops
Deep Data Loops crafted 5 Chillout / Ambient song ideas featuring Wav loops and MIDI files. Each consist of 9 tracks, mostly of harmonic character, a few percussive.
All tracks come as MIDI files as well so you could exchange the sounds, if you wish to. However all content is royalty free and can be published in any form (except sample libraries). Arpeggios have been used a lot here so any synth arps go along well with this pack, if you want to change the sounds.
Another tip for individualizing would be to add more rhythmic elements and drums.