I'm not sure the video killed the radio guy, but it certainly makes for an entertaining topic of discussion, or even a musical classic. If you've ever wondered what would be the result if you just search for video, you won't be disappointed, but maybe try adding a second word to the phrase, you might find what you're looking for.
Performed by Joan Silentio, this is a vocal aria in a similar style to Lullaby for a Princess. It's about Cadence as she awaits the return of Shining Armor after an attack on Canterlot by Changelings.
Still broke into a song later than Crusaders Of The Lost Mark.