Apparently there was a Marlowe musical. For about a month in 1981.
http://www.ibdb.com/production.asp?ID=4858 And judging from the song list, there seems to have been some kind of rivalry or love triangle between Marlowe, Shakespeare, and Aemilia Bassano.
I have no words for this.
ETA: A review of the show, from the NYT!
http://tinyurl.com/24nutc