Dark, gritty battle rap at 90 BPM in 4/4, driven by hard, dry boom-bap drums: punchy kick, cracking snare, and tightly swung closed hi-hats. A distorted 808 sub-bass locks to a sparse two-chord minor-key loop, with muted, detuned piano and faint vinyl grit. Keep the mix raw and uncluttered, leaving wide space for forceful vocals.