[9] Afterward he began appearing on variety TV shows in the Dominican Republic and won several singing competitions as part of the group Alpha y Omega, from which he derives his stage name.

[2][11] Also in 2010, Omega toured the United States and performed in New York City's Manhattan Armory and at Elizabeth, New Jersey's Ritz theater, among other venues.

[12] Omega's continued popularity led to his being signed by Akon, through his record label Konvict Musik in 2011.

[9] Peter De la Rosa's musical career has been marred by multiple encounters with authorities in Dominican Republic.

He has been arrested on several occasions for failing to pay child support,[17] domestic violence,[18][19] and breach of contract.