I remember PRS forms.
we kept a special list of the worlds shortest song titles ( no relation to what we'd actually played) , so we could fill them in real fast & go home.
& we were cash only - no cheques, 'cept for ones we could cash over the bar.
& we changed the name of the band every couple of years.
nowadays I just teach - & I even pay tax.
there was a lot of fuss here in England about PRS when they tried making guitar shops buy "performance" licences - for all those kids playing smoke on the water & stairway to heaven on the demo instruments. Then they made even bigger fools of themselves by sueing a lady who kept a radio on in her stables to soothe horses. PRS said she needed a licence for that ( priced per horse I suppose)
PS - the trumpet guy - look at it this way - you're getting free lessons broadcast- though the wall . You could sell tickets - but watch out for undercover PRS agents