An unforgettable experience

Last weekend,I attendd a concert,it was about classical music,
it was performed by piano,violin and cello.
The show was including Mendelssohn,Brahms and Piazzolla's song.

I was very impressed by Piazzolla's song. 
This song is about the winter of his hometown, it is really a good song.

I think it was be a good concert,but a bad thing happened.
I found a mouse under my seat, it was really disgusting.
I was not interested in the concert no longer,I just wanted to leave this place.

I think this is the worst concert I have attended.