Sal was born in Manhattan in 1955, and raised in The Bronx, New York City of Puerto Rican parents.
He grew up in the tough streets of the South Bronx where at the age of five, his dad began helping him develop his deep love of music, and as a result Sal was able to stay away from the negative influences those streets can bring.
The early to mid-1970s was a time when the electric bass guitar came of age with the likes of world-famous jazz bassist Jaco Pastorius and Stanley Clarke established the instrument as a solo voice.
Cuevas was an innovator of this style in Latin music, as on Ray Barreto album "Ricanstruction" where he takes solos alongside the horns.
On a couple of tracks, he also uses sound modifying effects and foot pedals to add a different "color" to the sound of the bass.
Sal is credited as being the innovator of Latin music bass playing when he first incorporated never before heard, nor utilized, Funk/Jazz/R&B/Rock styles and techniques on the instrument.
While maintaining the traditional flavor and concepts of authenticity within Latin music, he managed to fuse all those other "worlds" into his bass playing technique resulting in the creation of an innovative style.
On some recordings for instance, he would play very intricate horn section lines or phrases on the bass in unison with the horns, which until then was virtually unheard of within the genre, as was his funky bass slapping and string snapping technique which today has become a norm for bassist within Latin "salsa" music thanks to Sal.
He also incorporated the technique of "tapping" in his Latin bass playing.
On the electric upright bass, Sal incorporated techniques which also (until then) were completely unheard of in Latin music such as slides, (Glissandos), and utilizing the very upper ranges of the instrument, (Check out Sal with Papo Lucca/Celia Cruz on Sonora Poncena's "La Ceiba Y La Siguaraya").
Internet searches on Sal are sometimes incomplete, but he is currently living in South Florida where he stays very active doing recordings, songwriting, and productions.
Sal plays a couple of other instruments as well.
Cuevas died May 9, 2017 in Miami, Florida.