>>966
It's a tracker, and not a very good one at that. I tried to use it for about two weeks, the trakcer interface certainly isn't for everyone.
>>987
LMMS is FL Studio, but worse. He's looking for something less bloated.
>>1036
Milkytracker is good, but only for chiptune. If OP is looking for any amount of synthesizing he won't be impressed by Milkytracker.
You think you want a sequencer, but you'll make better things with a DAW in the end. I whole-heartedly recommend Ardour. If you try that and still want a sequencer, install mnt-produce.