Romantic/Pop Piano Song Fast Paced - Can't Remember it's name but v. familiar
 

Was watching this adult swim video:

(There are no spaces around the brackets, this site isnt letting me post the link :( )
youtu.be / OndeviKIRLs?t=40

I've linked it to a scene where a Fast Paced Romantic-Pop Piano song is playing while I distinctly remember but can't put my finger on. Ive sent it to many of my mates, and all recognise it but can't recall the song :usehead::(.

Thanks :)