Is Apple going to do a streaming service for music?

I stopped using iTunes about a year ago, and have switched over to Spotify. Ever since Spotify came to the US, rumors have been tossed around that Apple will enter the same game relatively soon, assuming that they will have an event in Feb-March.

If they did do this, what would the price be, would you subscribe to it? I would just because they have some tracks that Spotify doesn't (Beatles, AC/DC, etc).