Blu Cantrell and Sean Paul - Breathe (instrumental) B minor
Dr. Dre and Snoop Dogg - Nuthing but a G-thang (acapella) C# major, so A# minor
Blu Cantrell sampled Dr. Dre 'What's the Difference' on her 'Breathe'. So now I put Dr. Dre and Snoop (pitched up one semitone) back on top of Blu.
Send reverb on vocal, small timing corrections. Included parts of Blu's rap to reveal the source.