cumquat

Sequencing Software For Low End Mac

need your help guys: i've got a stoneage-powerbook 520 (68k, 4mb ram, os 7.5.5) and used it together with micrologic av 2.0 (free logic demo version untill 1998) as midi sequencer for my hardware synths. recently emagic switched to micrologic version 4.0 which requires at least 8mb ram and os 8.0 or higher and i missed to backup the 2.0 version: that's why i'm looking for a alternative software. i already checked out easybeat, jasmine and others, but they don't work the way i'd like to use it:
i'm looking for a simple midi sequencing software for the "blackbird" to work with on stage (recording, looping (i don't need arranging facilities), muting, recognizing note-on/off, volume and velocity (no other controllers needed)) at best with all midi-tracks in one view.
in case you're about to recommend me to get a newer mac: i've got a titanium g4 876mhz too, but the "blackbird" looks as old as it is and therefore it's unlikely that it get snatched between soundchecks and should that happen, it's much cheaper to get a substitute.
i will appreciate any hint!