You can say: - 저는 약간 조증이니까 이렇게 감상을 했다면 ... 나래는 중간에 잤어요. (중간에 = during/in the middle of something) = I'm a bit manic so what if I had enjoyed like this... but 나래 fell asleep in the middle of it. But 조증 is not a word people commonly use to describe the mood at a concert, though. it sounds too technical. Some other ways to say it - 저는 약간 흥분해서 봤는데 나래는 중간에 자더라고요. (흥분하다 = 들뜨다 = to be/get excited) - 저는 너무 재미있게 봤는데 나래는 자더라니까요. -더라고요 and -더라니까요 relate one's recent experience (often with a surprise or enthusiasm), a bit like "Guess what, she ...".