JASRAC (Japanese Society for Rights Authors,Composers and publishers ) announced the best selling 30 songs 1982-2011 on Nov.6th, in token of commemorating the 30th anniversary of JASRAC Award. http://www.jasrac.or.jp/ejhp/index.htm
The No.1 song is “The One and Only Flower of the World”(/世界に１つだけの花）, made by Noriyuki Makihara and sung by SMAP.
The song has won some awards as well . And in its lyrics, it sings “You don’t have to become No.1, you are inherently one and only..”, but the song is quite popular nationwide or even internationally, and actually has “become No.1” song.
Some of other 30 songs are Enka, some are Anime songs, such as “Evngelion” BGM, “Gundam BGM” and others.