Quick Write: Stuck on an Island

So I'm on an island and can only bring an Instrument, a girl, and the discography of a music artist.

The first part is easy, I would always bring a Guitar. It's not the only instrument I play, but it's the best instrument to "noodle" around on and write songs on. I know the basics, but there is lots more to learn, and it would take me LOTS of years to learn it all.
The second part isn't that difficult either. Obviously, I would take my girlfriend. Not much of a decision there.
The third part is BY FAR the hardest thing to decide. I try to listen to lots of music, and my tastes are always changing. Sometimes I'll like an artist for a long time, sometimes I'll get relatively sick of a song pretty quickly. As a result any old band that I choose would get old, quick. Ultimately, my final contenders are all very different and surprising to anyone who knew what kind of music I like. It's between The Beatles, Bob Dylan, or Radiohead. The Beatles are an obvious contender as their music is timeless and you can analyze it on so many different levels. Bob Dylan is also the same in that respect, only I haven't listened to him really at all. Radiohead because although they're not a "classic" (yet) their music is so amazing and diverse, not to mention I'll listen to a song multiple times and hear new parts or elements of a song. Ultimately, I would probably pick Bob Dylan because (I've heard, assumed, and am hoping) it would take a lifetime to fully realize the genius of his songs and lyrics.