Think about these three consumers (A, B, C). In each of these scenarios, the consumer has never heard of your band or listened to your music before.

Consumer A: Consumer A encounters a flier advertising your live show.
Consumer B: Consumer B encounters a Google search text advertisement for your band.
Consumer C: Consumer C encounters a Google search text advertisement for your song.

Consumer A’s brain says to himself: new music, live show, travel, parking, security, cover charge, loud, $50 for the night including beer, girlfriend needs to be talked into it, lots of work, could be fun, etc.

Consumer B’s brain says to himself: new music, band website or band MySpace page, multiple songs, multiple photos, band biography, slow loading web pages, unreliable music players, reasonable amount of effort to digest, $10 to $15 CD price; interesting, but I will come back when I have time.

Consumer Cs brain says to herself: 30 seconds to evaluate, $.99 cents to buy, minimal time, minimal work.

The purchase decision (the mental calculation of time plus cash commitment) to go to a live show is substantial, the purchase decision to get to know a band or an album is moderate, but the purchase decision to evaluate and buy a song is absolutely minimal.

The more time and money people have to invest in making a decision/purchase, the more time and money you will have to invest to convince people to purchase what you are selling.