I have been trying to write some stuff and I'm having a really difficult time. I want to make some recordings with nothing but bass and a drum machine. I have a lot of pretty cool drum tracks and some good bass lines but can't seem to make a song out of them. My biggest problem seems to be the drum machine. I have no problem programming a straight repetative beat but the rolls and fills are killing me. Any body got any tips? How do you guys create your drum tracks.