No, just a couple talk shows they were on. No actual music. Sorry. Do they not license their music?
Edit: you can upload your own Led Zepplin songs to the service and it would be just like google play having them though. You can stream them from the cloud or download them on your phone.
I guess they don't. No other streaming service has them.
I'll probably go this route next time I am home and can rip all my dad's albums. Thanks.