What do you sing, when the ipod/zune/radio doesn’t work?

My new novel is set in the post-apocalyptic PNW. For it not to be future fantasy, the poxy-lips needs to happen within the next 5 years or so. The question is, what songs will people sing once their ipods/zunes/radios/etc no longer work? There certainly are musicians around, but the infrastructure to keep the electric guitars/keyboards/etc is [...]