For music, unlike a $500 software program, people are paying a buck or two a song, and it's those dollars and pennies that have to add up to pay for not just the cost of that song, but the investment in the next song.

For music, unlike a $500 software program, people are paying a buck or two a song, and it's those dollars and pennies that have to add up to pay for not just the cost of that song, but the investment in the next song.