Hahahaha all J-pop does not sound the same! Or maybe it does, because that song was released 15 days ago so you can't have heard it last fall. Actually a lot of big artists in Japan are produced (read: their songs and lyrics are written, arranged, performed, all but sung) by a guy named Nakata Yasutaka; Meg, Perfume, Kyary Pamyu Pamyu, and many others. So maybe it all sounds the same cause so much of it is just one guy.
All my friends tease me for liking that stuff, but what can I say? It tickles me in just the right way*. Makes my heart go pitter-patter and all that. Like being in love but just the nice parts. I don't like AKB48 and their cohorts though, they're too sugary even for me.
Back to, uh, 'real' music, this song is my favorite on Coltrane's My Favorite Things, though maybe 'objectively' the title track is better.
*also the girls are cute