Michael "Mike" Wansley, better known by his stage names Wanz and TeeWanz, is an American R&B singer. He performs in various genres, including rock, R&B, soul, hip-hop, and pop. He was featured on fellow Seattle-based duo Macklemore & Ryan Lewis' international hit single "Thrift Shop", which received two Grammy Awards for Best Rap Performance and Best Rap Song. He is known for having a booming bass voice, specifically a sporadic true bass or a low bass-baritone voice.