You can download a high resolution version of this video.
https://www.youtube.com/watch?v=Y3RJdR0Bdb4

This is the band Tribe from Boston. The red haired woman in the green skirt is Terri Barous who later married Eric Brosius (the blonde Tribe guitarist and System Shock sound engineer) and became the voice of SHODAN in SS1 and SS2 and also the voice of Viktoria in Thief 1, 2 and 3. Greg LoPiccolo (bass in Tribe), who also worked on System Shock, and Eric Brosius later went on to make the games Guitar Hero and EyeToy AntiGrav while working for Harmonix.

Tribe live at the Avalon Ballroom, Boston, MA. Includes the song Rescue me sung by Terri Brosius @ 35:50. The recording was likely made in 1992.

http://www.tribeonline.info has live and studio performances and comprehensive information.
Tribe on myspace: http://www.myspace.com/tribeonline
Interview 16.04.07 with LoPiccolo in Gamasutra

Timmy Magic made this cool SS2 beatbox. Unfortunately his website practically stopped existing. I saved the beatbox before it went down.

Requires Flash.

When I was doing some clean up procedures on my hard disks (mostly deleting/moving files), I found this fan mix and decided to upload it in this thread.

https://soundcloud.com/robotkid/shock-live-sept-2010

By the original creator of most of SS2's music, Josh "Robotkid" Randall. (As discussed here on TTLG.)
This gets right back to the urgency of the first tracks. Thank you, Robotkid.

EDIT: I found out what the sample at the start and end of the track says in full:
"Galasphere 347 of space patrol calling unidentified ship! They're not answering."
This is a sample from the early 1960s BBC children's TV series, named "Space Patrol" featuring marionettes. (Not to be confused with the 1950s American live action series of the same name.)

Would ya mind telling me how ya composed "Move it Tommy"?  I know that it contains voice clips but I was curious about the music used - why ya used it or how you came upon it.