out of the blue

Music is being sold online now. Most sales are going to be song-by-song, as people collect their favorite songs by their favorite artists. This means that the one-to-three popular songs from a CD are going to be bought a lot more than the rest, whose sales will decline. This has two direct repercussions, leading in opposite directions. First of all, people don't have to get an entire CD to get that one hard-to-find song. The record model is forever broken. So, the artist is going to lose money as people only spend a dollar or two on their CD instead of $10 – $17 for the entire album. However, this also means that a lot of people are going to find it more worth it to spend money on the artist at all. If they're only interested in one song off the album, they wouldn't be able to justify buying the entire CD, but if they can get the song by itself they're going to spend money on it. This trend brings more revenue to the artist. I suspect that the second trend will prove to be the more noted, and will result in increased music sales overall, but I'm not sure. What do you folks think?