TV theme songs, once a vibrant piece of pop culture, have been on the wane for years as networks experimented with ways to keep viewers from switching channels. Their mission?

Demi Lovato and Jimmy Fallon performed a metal cover of the 'Barney' theme in 2008. The pop star had cited metal as one of her favorite genres.

The Meow mix cat food jingle, the Barney theme song and an assortment of Sesame Street tunes also were pumped into detainee cells. Read the whole article by AP here.

Harking back to her first on-screen job, Gomez wrapped things up with a sing-along of the “Barney & Friends” theme song. Up to that point, things had been relatively tame.