The lead singer for the pop rock band Maroon 5 was a returning coach on the fourth season of an American reality talent show that premied on what date?
The Voice (U.S. season 4):  Coaches Adam Levine, CeeLo Green, Christina Aguilera, and Blake Shelton returned, though Green and Aguilera appeared as performers instead of coaches. Adam Levine: Adam Noah Levine (born March 18, 1979) is an American singer, songwriter, multi-instrumentalist, actor, and record producer. Adam Levine:  He is the lead singer for the pop rock band Maroon 5.
i don't know