(written from a Production point of view)
Spencer Wright is a professional bass player who appeared as a wedding band member in Star Trek Nemesis. He received no on-screen credit for his appearance and was identified by the name tag of his costume which was sold off on the It's A Wrap! sale and auction on eBay. 
Wright was born in Washington, DC and played in several local bands. He attended the University of Miami and was able to perform with several famous names. Since 1998 he resides in Los Angeles and is currently a member of the independent rock band "Bennystrange".
As a musician he has appeared in several television series and feature films such as JAG, Sabrina, the Teenage Witch, Veronica's Closet (starring Kirstie Alley), and American Dreams and has performed on the soundtrack of feature films such as War of the Worlds (2005) and Clint Eastwood's Flags of our Fathers (2007).