John Demas - Classical Guitarist - Tampa Florida Solo Guitar - Violin/Guitar Duo - Jazz Combos with prices starting at $200.00 Professional showmanship, with a great sound, appearance and repertoire for wedding ceremonies receptions and parties. BIOGRAPHY John Demas (author, educator, inventor, and performer) is the Program Coordinator for Classical Guitar Studies at the University of Tampa and the Program Coordinator for Jazz and Classical Guitar Studies at Hillsborough Community College and Florida College.