Britney Spears - Baby Hit Me One More Time (instrumental) C# minor
Notorious B.I.G. - Going Back Back To Cali Cali (acapella) D# minor
UPDATE
Changed vocal placement to later, this sounds more relaxed. The Cali vibe.
Stereo-widened, extra bass mental, now extended just before 0:39.
Elastique Pitch VST kept formants, vocal 2 semitones down, and bit of send reverb.