It's very painful just to breathe, let alone play drums...and I have a gig this Saturday for a charity (Autism). We committed to this in January, and it's too late to back out, and I have no sub. The band won't play with a sub anyway. So....I gotta suck it up and do this show. It's high energy classic rock and metal. Ouch! Any tips from anyone who may have been in this kind of a jam?