A London-born musician who is best known for his ongoing work with Ratdog. Although primarily a bass player, he plays several instruments, including the guitar, and has done extensive arranging.

Sylvester began his music career as an audio engineer. Working as an assistant at Abbey Road Studios when the Beatles recorded their so-named album, he was inspired by Paul McCartney to take up the bass guitar.

After working as a touring musician with acts such as Dana Gillespie, he moved to the US and became a session musician. As a session musician, he worked alongside Steve Douglas, backing groups like the Beach Boys and Ry Cooder. When not doing session work, he played live shows for acts including Billy Preston, Christine McVie, Steve Seskin and Del Shannon.

In 2003, he was chosen to replace Rob Wasserman, Ratdog's original bass player.