Sean Hayes (born Sean Padrick Hayes on August 27, 1969, in New York city) is an American singer-songwriter. He began playing traditional American and Irish music with a band called the Boys of Bluehill. Much like the man himself, Hayes' musical sensibilities defy easy categorization. Just because there's a banjo featured in a track, don't expect it to sound Appalachian -- and certainly don't expect that recurring tuba to have anything to do with Sousa and his severely metered marches.