The Calliope is non-operational at the moment, due to the motor burning out. It was powered by a rather old and noisy vacuum-cleaner motor, which probably suffered from overheating. Did you know that you can’t buy new vacuum-cleaners that blow as well as suck these days? Thinking laterally, we have an old air compressor which could be made serviceable again at minimal expense. This would be useful in its own right around the workshop, but with a suitable reducing valve (the calliope needs only 1psi) could provide the power for the organ.