Obama leads field in unsolicited campaign songs

"I wanted to do something special for her, and let her know that she did have a Latin vote, and a young vote as well, and give her this song as a gift," said the resident of Brownsville, Texas.

It's not just musicians writing songs to show their support for Obama. Rolling Stone put him on the cover when endorsing him for president, Bruce Springsteen has announced his support, while performers like OK Go and Fall Out Boy's Pete Wentz have performed for his benefit. Jay-Z has been taking time out on stage during his tour to flash a picture of Obama and tell the audience, "It's time for a change."

"Musicians generally do not like authority, establishment or bureaucracy. Obama is the first candidate in my lifetime, certainly in memory, that represents any kind of new wave of change," said Craig Wedren of the rock group Shudder to Think, which was part of an indie-rock bill, including OK Go, that recently gave a concert for Obama.

It's hard to pinpoint whether the popularity of songs translates into any particular voting surge. will.i.am released "We Are The Ones" a few days before the Ohio and Texas primaries, but Clinton won both states.

But there has been record turnout in many states this year. will.i.am said he specifically used music to support Obama instead of just lending his celebrity because "people are tired of that."

His song "is driven by inspiration and it's creative and it's love, it isn't anything else," he said.

That's what makes the majority of these songs so key, especially for Obama, says Grove.

"The dream scenario, by the way, is what the Obama campaign has basically landed, which is to inspire a group of supporters to do this on their own without any real top-down campaign control," he said.

And if candidates can move the songwriter, they may be able to move the nation as well.

"I keep wondering, if (Obama) is inspiring so much creativity for songwriters," asked Palovcik, "what is he doing for farmers?"