At EMEAPP, the conserved instruments are regularly played and part of a live session. You can find an overview of the live sessions here.
The ARP 2500 is just one of those incredibly special machines that is so flexible and so widely open to the interpretation of the artist who uses it. Here is electronic music artist Ombient (aka Mike Hunter, who is a frequent collaborator and volunteer at EMEAPP) with this wonderful melodic performance on our 2500 system along with some other ARP goodness (ARP 2600, Pro-Soloist, 1613 Sequencer and 8 channel mixer). Enjoy the ride and the VFX generated by Ombient