M3 was an American experimental rock group, founded by the brothers Roger Miller, Ben Miller and Larry Miller. Their name is a dual reference to the three M surnames, and also pun on the musical notation for a minor third. All three Miller brothers are longtime fixtures on the Detroit/Ann Arbor, Michigan music scenes. M3 is a quasi-reunion of Sproton Layer, a short-lived group the Miller brothers formed in the late 1960s. Afterwards, Roger was active with several groups (notably... [more on Wikipedia]