"Soaring So High" is Starvin' Marvin's theme song, heard in the episode "Starvin' Marvin in Space". It plays when he is flying the Marklar spacecraft, first while traveling to Australia, and then later with the boys, while traveling in space. The song seems to be activated by pressing a big red button. Eric Cartman deems the song to be crappy.
Soaring so high above the world,
never thought I could be so free.
I'm one with the birds,
and magic is all I see.