Johntá Moore Austin ( jon-TAY; born June 28, 1980) is an American singer-songwriter, arranger, producer, vocalist and rapper signed to Jermaine Dupri's So So Def Recordings. He is known for collaborating with producers Bryan-Michael Cox, Jermaine Dupri and the production duo StarGate. He won two Grammy Awards for his work on the songs "We Belong Together" by Mariah Carey and "Be Without You" by Mary J. Blige.

Source: Wikipedia (https://en.wikipedia.org/wiki/Johnt%C3%A1_Austin)