RakeStriver

I need some people to verify this for me. After beating the game, you get an alternative version of Pleasure Garden on the ending credits screen, and what struck me is that the pitch of the voice in this version is a bit smoother and higher than the Opening version or full version. Am I imagining things or is this actually sang by someone else, or just sang by the same person, but in a higher pitch? Would be nice if someone could provide the title of song as well, shuold this be an alternative version. Thanks in advance!