On Tuesday's Late Show, Colbert interviewed Rachel Bloom, the creator and star of the musical comedy Crazy Ex-Girlfriend. The host began by asking Bloom how she integrated music into a story, since that's not how things work in real life.
Bloom explained that anything can be a musical - including their interview! Colbert and Bloom then starting singing a duet so charming that we forgot for a moment how terribly we want to see Hamilton.
Watch the full clip below.