Since Gleeman is a family name for some in the world, I chose to go with a modified version. There is an inside story about why I write it as Glee-Mann, and to find out, find me at a tri-city event this summer.
A medieval itinerant singer; a minstrel. [Middle English gleman, from Old English glēoman : glēo, minstrelsy; see ghel-2 in the Appendix of Indo-European roots + man, man; see MAN.] - from American Heritage Dictionary.
Several synonyms include troubadour, bard, harper, jongleur, musician, performance player, poet, and show singer. - from Thesaurus.com.