Musical Tears

I was testing out Jay Chou's new album. Seeing what new ideas he had came up with. There is this song 蒲公英的约定 if i'm not mistaken. I know the chorus is taken from the movie 不能说的秘密 but he added lyrics to it. Something about the chorus, the 7 notes, invoke some kind of memory in me. I don't know what izzit but its definitely not the lyrics. I can't understand the words he is singing but something about this melody overwhelms me. I think I'm getting more emotional but tears actually fell. I squeezed them back of course but this is something special. The melody is actually derived from Rachmaninov's Symphony No.3 I think its the 3rd movement or 2nd movement. I was actually writing a song that had a similar motif but seeing he has already done it, I'm going to change plans. But these 7 notes are just amazing. What happened? I don't know. I can't figure out what is the memory exactly.

Maybe its the rain brushing across my face
The sound of water pattering outside
The cars zooming pass on the highway
Street lights illuminating the rain drops
Leave rustling
Piano in my ears
What am I trying to tell me???