With an arsenal of slippery, good-foot grooves adapted from traditional Mardi Gras second-line rhythms, New Orleans R&B has evolved into a mighty, many-headed musical beast since its '50s beginnings with piano men like Professor Longhair and rock 'n' roll originator Fats Domino. Over time, it encompassed the psychedelic spookiness of Dr. John's hard-grooving gris-gris, the sexy, syncopated funk of The Meters, the horn-heavy, Mardi Gras-ready madness of Rebirth Brass Band, and plenty more.