The Music Publishers' Association (MPA), which represents US sheet music companies, will launch its first campaign against such sites in 2006.

+5 Insightful Comment On Slashdot:

DUDE: "Hey man, I just figured out the solo for [insert song here]. It's so cool to play."

OTHER DUDE: "Sweet, show me how it goes."

DUDE: "Um, I can't -- it's illegal. And don't tell anyone I figured it out myself. If anybody asks I bought the music." ...

My possibly over the top reaction:
"Ummm, ok, so how do you prevent people from writing down lyrics from whatever they're listening to? I play some music for you, what's to prevent you from writing down the lyrics? (However, here's the thing. Reading the FBI warning on movies, I'm still not certain if inviting a friend over to watch a DVD is legal or not. So maybe letting a friend listen to you music is illegal too. The one advantage about the FBI warnings on DVDs is they spell things out, explicitly. I don't have such an explicit warning on my music... maybe a 30 second disclaimer read right before the music on track 1?)

Whatever. The more the music industry alienates their fanbase the faster the replacement will come. I, for one, welcome our new music overlords (whoever they are). Hopefully they're less sue happy and smarter about how technology affects their music.