Martin Rivera (born October 20, 1982), better known as Noztra, is a reggaeton musician. Born in San Francisco de Macorís, Dominican Republic, his family moved to New York looking for work when he was seven. At the age of 16, Noztra began composing his own lyrics and music.
In 2002 he conducted one of the first reggaeton radio shows to air in New York City. Shortly after, Noztra opened shows that featured reggaeton stars.
Noztra entered the scene with his single "Damelo Duro", which was distributed on mixtapes and had great success on radio. His first album, Ya' Aint Ready, contains 19 tracks and a variety of sounds such as Sandungueo, Bolero, Streets/Gangsta hip hop and social themes. The first single off this album is "El Maquinon", and was produced by Monserrate & DJ Urba. It peaked at number 31 on the Billboard Latin Tropical Airplay chart.
Noztra was the first reggaeton artist to sign with a major label.