Two days ago, Dan Marfisi, a longtime musician and songwriter in the L.A. area, received a text from a composer friend. “He wrote, ‘Did you write this song on The X-Files?’” Marfisi says. “He said, ...

There’s nothing like music to take you right back. The near-time-machine quality of the perfect song is a powerful thing. And TV themes and theme songs often offer that in an even more concentrated ...