You’re watching “Bones”. Agent Booth turns on his car radio and out comes a beautiful, soft, romantic song from the ‘90s. Booth glances at Bones who is sitting next to him. She notices his glance and looks back at him "What?" she says. Sexual tension is gripping the pair of them. Suddenly you’re no longer interested in whether Bones and Booth are going to make out in the back seat of the car. All you want to do is remember who sang that lovely romantic song that you're singing along with and wondering where you can buy it.

You MUST know, so you try to catch a few words and rush off to the computer to Google it. Meanwhile Bones or Booth has said something wrong, and the moment of possible passion between them has passed, but who cares? You have to have that song!

I wonder if shows in the Fifties, like “Dragnet” or “Highway Patrol”, had songs playing in the background. I would guess probably not. This is a much more recent trend, and gradually the music played on television shows is becoming as important as the action. In “Cold Case”, for example, the music is cleverly taken solely from the year in which the action takes place. Several episodes of that show have featured the music of only one artist. Such s Bruce Springsteen, or Pearl Jam.

When a show features a particular song, it can have quite an effect on the career of the artist, and can inspire a sudden surge in sales or downloads of the particular song. Sales of songs by such artists as Fauxliage, The Decemberists, and The Bravery jumped dramatically for a few days after episodes featuring their music aired.

Another group to benefit from having their music played on TV is “The Kin”, who have had an upsurge in sales of their songs having been featured in “Army Wives” and “Moonlight”. Speaking of “Moonlight”, the vampire detective/love story which was inexplicably canceled after just one season by CBS, that show’s fans were frantically searching for the titles and singers of songs featured in each episode within seconds of the show having aired. People on the west coast were on forums searching for the music from fans on the east coast where the show had already been seen.

The rise of iTunes over the last few years has been incredible to watch, and many fans of the shows have created “iMixes” of songs played during their favorite shows. “Moonlight” has more than its fair share of such fans.

One website gaining more and more devoted fans nowadays is www.TunesOnTheTube.tv which manages to list the songs played in shows usually on the same day that they are broadcast and covers an incredible 80 popular shows, past and present.