Drums have that gritty boom-bap feel. Just listening to the song, I can imagine that the time stretching and getting clean loops would be a bit of challenge. You nailed it and make it sound natural...not too much aliasing or obvious contortion of the sample to get it to fit.
My only critique would be song structure and flow. Would like to see you chain your chops/loops into a more typical song structure (Verse, Chorus, Bridge, Breakdown) and have them flow a bit more seamlessly into each other.
Otherwise, I enjoyed this!