Grimes teamed up with Bleachers, Jack Antonoff's solo side project, to release "Entropy," a twinkly track that premiered on last night's episode of Girls.

The pair have worked together before, but it's safe to say that Grimes hasn't released anything nearly this poppyā€”"Entropy" toes the line between charmingly bouncy and sickly sweet. I can't decide if I like it! What do you think?