Shai is an Pop/R&B/Soul quartet debuted in 1992. Their biggest hit in the mainstream is an a capella single, "If I Ever Fall in Love," which made #2 in the U.S. Billboard Hot 100.
These are photos from concerts where Shai played, so they may be of other bands that played the concert as well.
Kube 93 Summer Jam Jul 30, 1993 Monroe, Washington, United States Uploaded by Longshanks
LL Cool J / Naughty By Nature / Silk / Shai / Jade / SWV Jul 17, 1993 Philadelphia, Pennsylvania, United States Uploaded by Zimtrim