I run a robot rock band in New Zealand called the Trons. They have been going about 3 years now and have played over 80 live shows, mainly in NZ but also including two trips to Europe. All the songs are original and all instruments are played by the robots. The robots are built mainly from junk and salvaged electronics, with a bit of hi tech stuff to make sure the timing is all OK. They play gigs like normal human bands, usually doing a 30 or 40 minute set. Audiences dance, clap, sit and watch, or sometimes even stage dive.
I hope they tour the USA soon!