心情不好压力大的时候 when I'm not in a good mood or when I'm feeling very tired or the fatigue comes to me钢琴曲不一样 让我放松提神醒脑 the music from piano can be very different from other kinds of musical instruments. I feel like very relaxed and refreshed不知道为什么 天生的 I don't know why probably it's born with小时候学过钢琴 when I was at my young age, I tried to learn something one or two on piano