update on that band:

ok so they performed in the school and had absolutely no relation with the school whatsoever. around 5% of it was music (ear torture) and the rest was the members talking about mental health so that’d the message part, the school probably wouldn’t have let them in if they didn’t include that

also the band is apparently called “the mercians” and touring around uk schools, so some people here in the uk may have seen them before