I had noticed the lack of a music forum here, and the surprising lack of a music thread.
For a pirate tune (and brilliancy in general) I recommend Ween's clasic "The Blarney Stone," from their acclaimed album The Mollusk. If you chance the whole album, don't let the first song throw you. It's fun, but the rest of the album is not nearly as...childish. And if you only want to get one song to test Ween out, make it the mind-blowing "The Argus," from their dazzling album quebec.
Lately I've been listening to a lot of Shearwater, The Shins, Red Hot Chili Peppers, Frank Zappa, and Medeski, Martin and Wood.
On the other side of the music store, I recommend Stravisnky's Les Noces, The Rite of Spring, and L'Histoire du Soldat (without narrator), Brahms' first and third symphonies (especially), all of his string quartets, and the Concerto for Violin, and of course the epic (and generally considered to be the most influential piece of Western music ever written) Beethoven's 9th.