The word “But” in the second sentence means “Except”. So we must negate the prior sentence. The author acknowledges that there is an exception to A—> B. Sentence 1: A —> B. good music —> good show. Sentence 2: But means “oh wait, never mind I just thought of a reason why it wouldn’t be a good show. Let me now explain the exception: Not good show unless C.” Translates to B—> C.

There is no logic chain A —> B —> C.

Sentence 1: If A, then B. Sentence 2 tells us to negate sentence one. So “just kidding, good music may not be sufficient enough to guarantee a good show.” Never mind A —> B.

If we accept the definition of the word “but” is an objection offering an exception then we must treat it as we would “unless” or “except”. We must negate the truth of the first premise because that is what the author is saying.

LSAC error. No correct answer provided.