Selena Gomez Gets the Entire ‘SNL’ Audience to Sing ‘Barney & Friends’ Theme Song (Video) The “Only Murders In The Building” star pulled hard on nostalgic heartstrings during her monologue ...

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.

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?