Madrid-based rapper Rayden (born David Martínez Álvarez) was part of A3Bandas and Crew Cuervos, groups that released a combined total of eight albums from 2003 through 2012. A regular participant at Red Bull's Batalla de los Gallos competitions, he took the title in 2006. Signed to the Boa Music label, he released the solo albums Estaba Escrito (2010) and Mosaico (2012).