Not to be cynical, but it seems to me that Pandora has been foretelling its own demise for a year or more, to maintain its indy cred, its "fight da man" persona.   

Maybe this time it's real, but I'm not holding my breath, just continuing to enjoy "stations" like Bud Shank Quintet Radio, Duke Pearson radio, or Benny Golson Radio.  Truly its a remarkable on-line site. 

Too bad about Muxtape....discovered a few tracks while listening to their playlists, which I eventually downloaded from emusic and itunes. But I guess protecting royalties is more important than promoting music. My take is that the RIAA will likely win this battle and other battleswhile continuing to badly lose the war. Not sure that the financial return outweighs the stunningly bad optics of an organization trying to reverse a seemingly irreversible trend towards a more open exchange of new music by forcing the closure of an entity named Pandora. Insert pithy statement that includes the word 'box' here.

Brian, your BMO-backed, US-based IP address, online music gravy train days are numbered!

As one of you (I forget who) predicted... Muxtape is having problems.

Accordng to the article, Pandora is also at death's doorstep. On-line royalty battles are heating up, and it doesn't seem to be going in a good direction.

And one final, far more satisfactory sixties' classic, is the Jefferson Airplane's "Embryonic Journey", written/played by the amazing Jorma Kaukonen.  Peace Out.

Ah, I do love the concert footage of da Boss when he was still adopting the curly haired NY artiste persona, before he started wearing jeans and plaid shirts.  He was bona fide cool back then.  That's a pretty unambitious little number mind you.

In terms of other instrumentals by non-instrumental bands (I like the question, good little mind bender), I can think of a few more or less of the top of my head, particularly from the 60's, and carrying on the tradition of finding youtube clips:  Simon and Garfunkel's Anji, from their Sounds of Silence record, nice little latin-jazzy number; Quicksilver Messenger Service's Gold and Silver, a 5/4 minor key from one of my fave Frisco bands of the sixties (pretty lo-fi live performance in that extremely lame clip); and finally Captain Soul , which might be the worst song The Byrds ever recorded, particularly from their peak 1965-67 period.

What about Paradise by the C, by Bruce Springsteen? It's not on any of his studio albums, but he did release a live version of it. There's no singing, but it is a classic Springsteen sound.

29 terrific instrumentals by bands that usually sing

Care to add others?