download this combi demo KEY JUGGLER
juggle, retrigger and loop your loops live by pressing keys on your midi keyboard in REASON 4!!
record your keystrokes into the sequencer to edit for tighter results or use live in realtime to edit your loops in the fly. great on drums.
https://www.propellerheads.se/user/index.cfm?fuseaction=download_song&songID=24642 
