Although it's been critically lauded, Rick and Morty hasn't crossed over with mainstream audiences in the way that Family Guy or The Simpsons has.
However, that may all change as a joke song from the latest season has now entered the Billboard Rock charts at 33. Terryfolds, which was recorded by Seattle baroque-pop outfit Chaos Chaos and Morty voice-actor / creator Justin Roiland, has done pretty well considering that it was recorded on a whim and not especially intended to be a musical hit on its own.
Here's the track in question. It's not bad, to be honest. Just, uh, don't ask us what Terryfold is. This is a family website.