i was watching "Company Man" and i was wondering if....?

ok i was wondering if anyone remembers the 年 of beethoven's 钢琴 sonata that was refered to in "Company Man". from the episode i remember mozzie looked and the sheet 音乐 in Diana's bag and i dident catch what it said. but later mozzie 说 that it was beethoven's 钢琴 sanata then he 说 a 年 and i cant remember what it was if anyone remember 或者 can find out the information would be greatly aprecated. if that was kinda confusing just tell me and i'll try to refrase it.