The bass is WAY too high in the mix. Offensively high, even for a bass player. Some minor intonation quirks, nothing to get too hung up over. The slap part is better than the fretless part imo. You should blend the two together some more maybe? I dunno. It's a pretty simple track, fun and simple. I like those farty synths that appear halfway thru.
I wouldn't really call this drum n bass though, the loop is pretty bland, drum and bass is all about complicated, driving drums. cheers though. I checked it out
