The new Library of Birmingham is going to be filled with musicians playing brass instruments to mark its opening. The event is organised by Australian producers Super Critical Mass, who are calling out for participants. Interested parties need to be at least Grade 3 level, be available on one of the dates listed here, and own their own instrument. You must also be happy to be filmed by the BBC Culture Show. The performance takes place 3 September. Email firstname.lastname@example.org, or head here for more info.