Yamaha Motif has a nice composing tool they call a pattern sequencer..

You actually create midi loops (16 tracks) and then you can swith between them, or just chain them in a certain queue to create a song.

Its a lot like creating style parts but then without the chord changes but allows a lot of the flexibillity.

Are there any arrangers that also support such a mode? Any other synths workstations? Or is this something found in Motif and software tools only.