Son By Four SB4, SBY (Son By Four), Son By 4, Son By Four (SB4), Sonbyfour, Sony By 4
Son By Four is a salsa music group from Puerto Rico, well known for their English U.S. pop hit "SonbyFour* - Purest Of Pain (A Puro Dolor)". Standout collaborations with artist such as Jaci Velasquez, Luis Martinez and Lewis A. Martineé; master audio engineer and producer. Son By Four was created by Panamanian producer/songwriter Omar Alfanno and integrated by Ángel López, Pedro Quiles, and brothers Carlos Javier Montes and Jorge Montes. The group was signed to Sony Music Entertainment.