How did you like the concert? (Cambridge dictionary)
When there are interrogative words, inversions, gaps (I don’t know if there are gaps in this example), it’s just like getting through a long tunnel, in a foggy morning, on a calm highway. Next is my flash on the construction. Would you check what is wrong? First, I’d like to change the sentence into an in situ question to make my saying better.
You liked the concert how?
From this, I suppose that ‘the concert how’ is a small clause or verbless clause. I mean ‘
you were pleasant that [the concert (is) how]?’ From the word, liked, the speaker expects the listener would have enjoyed the concert, yet he likes to know ‘the concert was how’ for the listener. So the replying words would be approving, descriptive words for the concert.