There is a long story about the album from which this song originally came, beginning with the fact that it was totally bogus. If the vocalist on this song sounds suspiciously like Bob Dylan, you would be right. Other members of this non-existent super-session group included Mick Jagger, John Lennon, and Paul McCartney. You can read more about it by going here:

https://en.wikipedia.org/wiki/The_Masked_Marauders