Mantas was born in Vilnius, but later he and his parents moved to Kedainiai. Mantas started singing in Kedainiai rock band when he was age 13. When he was age 19, he went back to Vilnius and studied at Vilnius conservatory for 4 years. During these years he sand at "La Vita" band. They released an album. After one member left the band, Mantas decided to start his solo carrier. At 2001 he participated in the competition "Fizz Superstar" which held in Lithuania, Estonia and Latvia and reached the final. After the competition Mantas received a lot of producers deals to cooperate. With them, Mantas recorded some songs.