You just need everyone on the bus to learn every Queen song. Assign people to sing backround the instruments, and lead. It's hillarious.Sing. It's the best thing in the world. Everyone gets annoyed.
I still don't understand. Is manual triggering okay?If you have an electric triggering device connected by wires (eg a switch), that's fine, but if you're using radio control (a wireless remote or something), that's not.