“Urban Swamp Music.” “Gulf Coast Americana.” “Miami Mardi Gras Blues.” For more than three decades, Iko-Iko’s bluesy roots-rock sound has defied traditional categorization, leading to some truly inventive classifications for the beloved Florida quintet. Iko-Iko’s provided back up for legendary musicians like Willie Dixon, Bo Diddley and Ron Wood, and even worked with fellow Floridian Jimmy Buffett on his musical Don’t Stop the Carnival. The group’s sound fuses traditional American roots and blues music with island grooves, Latin percussion and “voodoo drums.” It’s rock ‘n’ roll music with a Bo Diddley beat, featuring the award-winning songcraft of charismatic bandleader Graham Wood Drout. See them light up the stage at Arts Garage in Delray Beach.