yeah the exif data is there

iso 800
f4
1/60 second
55mm

and btw your WB was set to flash, but you didn't use the flash.


to me it looks like it is ok IQ, but the band members being blurred would be from movement/not fast enough shutter speed ( note the orange cone in the forground appears fairly sharp).

at 55mm 1/60 is just fast enough to hand hold, but not fast enough to stop the action. unfortunentally your alreay at f4 (maximum for that lense) and iso is already at 800

another thing you could try is timing your shots for when they physically stop in a location (depending on the show they are performing). then the members themselves would not be moving and as fast of a shutter speed would not be required ( flags not wthstanding)