Real World article
(written from a Production point of view)

Clifton Brown is a musician and actor who appeared as an operations division officer playing the guitar in the Star Trek: Voyager fifth season episode "Course: Oblivion". He filmed his scene on Friday 18 December 1998 on Paramount Stage 8 and had a set call 12:45 pm. He received no credit for this appearance but is listed as "Sideline Musician" on the call sheet.