There are at least 5 artists by the name Fat:
These are photos from concerts where Fat played, so they may be of other bands that played the concert as well.
Hard-Ons / Fat Mar 18, 2022 Fortitude Valley, Queensland, Australia Uploaded by Alastair42
Livestock 8 Mar 28 - 29, 1998 Zephyrhills, Florida, United States Uploaded by Angelajkm
Vans Warped Tour 1997 Jul 23, 1997 Clarkston, Michigan, United States Uploaded by Daniel Sylvester
Vans Warped Tour 1997 Jul 22, 1997 Cleveland, Ohio, United States Uploaded by Jess Anshutz
Rory Gallagher / Fat Sep 27, 1982 Waterbury, Connecticut, United States Uploaded by Zimtrim
Steppenwolf / Fat Mar 13, 1971 Port Chester, New York, United States Uploaded by Zimtrim
Paul Butterfield Blues Band / Fat Oct 30, 1970 Island Park, New York, United States Uploaded by Zimtrim
Frank Zappa / The Mothers Of Invention / Fat Oct 16 - 17, 1970 Port Chester, New York, United States Uploaded by Zimtrim