Is to which you just listened correct grammar?

"To which you just listened" is grammatically correct, but it sounds a bit formal and awkward. It would be more natural to say:

* "That you just listened to"

* "What you just listened to"

For example:

* "The music that you just listened to was beautiful."

* "Was what you just listened to the new album?"

These options are clearer and more concise.