Luniz + Dr. Dre - I Got 5 On It (instrumental) A# minor
50 Cent - Disco Inferno (acapella) D major, so relative B minor
NEW UPDATE
Better vocal placement, lowered pella pitch one semitone, made other cutups in the vocal to fill out mental and leave room for the 'God is Good' backing vocals. Pitch-changed the very last syllable.
