[LAU] Lightweight, small-screen-real-estate sequencer?

Is there a lightweight, fast, not-extravagant-with-screen-real-estate (i.e. will work in 1024X600) piano-roll sequencer? I just need MIDI only. I don't want a tracker, I need piano roll. I know Rosegarden pretty well, and like it, but it slows to a crawl on my little EEE. Likewise Seq24, I've used it a lot in the past, but it is unusably slow on this little guy. And I'm not diving into Ardour3 yet. Seems like piano-roll MIDI sequencing, which as been around since CakeWalk in the days of 20Mhz 16-bit Intel 286 PCs and Vision in the days of 16Mhz 68000 Macs, could be accomplished with great speed on a 1.6Ghz 32-bit machine (or . Maybe there's a Linux program out there which does it, but I just haven't found it yet. Something pretty much like that should be around for Linux. Or should I fire up a 68000 emulator and Mac ROM and run EZ-Vision, or my 68000 Atari emulator and run SMPTETrack? -ken