Bubba Sparx - Ms New Booty (acapella) E major
Britney Spears - Baby One More Time (instrumental) C minor
I had speed+pitched up Britney already for my Shape of You mashup, so it is C# minor, the relative minor of E major. Reused the mental part about [0:20 - 1:09] twice to make the fit, made the whisper about [2:09- 2:27] a few decibels louder. Send reverb and stereo widened.