Common , Robert Glasper and Karriem Riggins have formed a super group, August Greene, and have dropped their first single from their upcoming project, "Optimistic" featuring Brandy . “August Greene actually formed before we chose a name, before we even knew it was a band,” explains Common. "Karriem, Rob and I go back many years. It was something natural. When I started working with them it was like, ‘man, this feels like home,’ and it felt new and fresh. We love working together.