The credits in South Park season 15 episode 14 lists a voice actor under the name Nabulungi Hatimbi, which is the name of a character in Trey Parker and Matt Stone's Broadway Show The Book of Mormon.
I've not heard much music from this particular musical. I am, however, a big fan of the South Park guys and the South Park musical. After you listen to the song you can hear the south park'ness in it.
"Hello"
youtube video by: IloveSalcedonoise
