He is the son of Cape Verdean singer Ana Firmino and Cape Verdean painter António N. Firmino (Toi Firmino). He was born on Cape Verde and brought at a young age to Lisbon where he spent his childhood and adolescence.
His foray into music began in the late 80s, doing vocals for Cool Hipnoise, and appearing in albums by Da Weasel, General D and Fernando Cunha. But his breakthrough came in 1994, with the release of Various - Rapública, to which he contributed two tracks, an essential album which brought wider recognition to the Portuguese hip-hop movement, then emerging in Portugal, thanks to rappers from Lisbon.
He debuted four years later with Boss AC - Mandachuva, recorded and mixed in the United States by Troy Hightower, who would mix his future albums. In this album he began experimenting with new musical genres (reggae, soul and r'n'b), whilst never forsaking his hip-hop origins, nor his African roots (some of the songs were sung in Creole).
Afterwards he joined Gutto from Black Company and the two founded No Stress, one of the biggest labels in Portuguese hip-hop. He co-produced Gutto's debut, collaborated with Xutos & Pontapés and Santos & Pecadores, and wrote music for film (Zona J, Lena) and television (Masterplan, Último Beijo). In 2002 he compiled the tracks he made during that time in his second album, Boss AC - Rimar Contra A Maré, entirely recorded, produced and mixed by himself. The music video for the track Quieres Dinero, co-produced with Gutto, was nominated for the African Video Awards in the Best Special Effects category.
In 2005 he returned with Boss AC - Ritmo, Amor E Palavras, mixed in New York by his long-time collaborator Troy Hightower. It reached gold status in August and platinum in October, becoming one of the best-selling Portuguese hip-hop albums of all time. In October he opened for 50 Cent's debut concert in Portugal.
In 2009 he released Boss AC - Preto No Branco and in 2012 Boss AC - AC Para Os Amigos, his debut for Universal Music Portugal, both of which were mainstream successes.
Boss AC Discography Tracks
|5605231002424||Boss AC||Mandachuva (CD, Album)||Nortesul||5605231002424||Portugal||1998||Sell This Version|
|5 605 231 01 1020||Boss AC||Rimar Contra A Maré (CD, Album)||EMI||5 605 231 01 1020||Portugal||2002||Sell This Version|
|560 523101302 4||Boss AC||Ritmo, Amor E Palavras (CD, Album, Copy Prot.)||NorteSul||560 523101302 4||Portugal||2005||Sell This Version|
|Boss AC||Preto No Branco (Album)||Farol||Portugal||2009||Sell This Version|
|Boss AC||AC Para Os Amigos (Album)||Universal Music Portugal||Portugal||2012||Sell This Version|
Singles & EPs
|011/98||Boss AC||Anda Cá Ao Papá (CD, Single, Promo)||NorteSul||011/98||Portugal||1998||Sell This Version|
|PROMO NS01|03||Boss AC||Quieres Dinero (CD, Single, Promo)||NorteSul||PROMO NS01|03||Portugal||2002||Sell This Version|
|PROMO NS005/2002||Boss AC||Baza, Baza (Hoje Não Quero Saber) (CD, Single, Promo)||NorteSul||PROMO NS005/2002||Portugal||2002||Sell This Version|
|Promo NS03/04||Boss AC||Lena (A Culpa Não É Tua) (CD, Single, Promo)||NorteSul||Promo NS03/04||Portugal||2002||Sell This Version|
|PROMO 04/05||Boss AC||Boa Vibe (CD, Single, Promo)||NorteSul||PROMO 04/05||Portugal||2005||Sell This Version|
|PROMO NS02/2005||Boss AC||Hip Hop (Sou Eu E És Tu) (CD, Single, Promo)||NorteSul||PROMO NS02/2005||Portugal||2005||Sell This Version|
|Promo VSL 1010-7||Boss AC||Que Deus (CD, Single, Promo)||NorteSul||Promo VSL 1010-7||Portugal||2005||Sell This Version|
|Promo NS01/06||Boss AC||Princesa (Beija-me Outra Vez) (CD, Single, Promo)||NorteSul||Promo NS01/06||Portugal||2006||Sell This Version|
|Promo IPV 1292 7||Boss AC||Levanta-te (Stand Up) (CD, Single, Promo)||NorteSul||Promo IPV 1292 7||Portugal||2008||Sell This Version|
|5605231013628||Boss AC||Boa Vibe (CD, Sin)||NorteSul||5605231013628||Portugal||2005||Sell This Version|