On an early August Friday night, the sound of banjo drifted over the din of downtown Indianapolis.
Daniel Coles leaned against a brick wall, stationed between diners eating on local restaurant patios. With his hands occupied by the banjo, he blew into a harmonica strapped around his head. On his leg, he fastened a tambourine to provide rhythm.
Crowds of people headed to concerts, movies or area bars stopped to listen, slowing down just long enoughs to catch the tune or toss in a buck or two.