Each week, the Twitter Japan blog releases a list of top hashtags. Tweet Beat investigates the buzz behind the hashtag.

Music Day

The No. 1 trend in Japan last week was #音楽の日 (Music Day), a 13-hour (and 40 minutes) live television extravaganza featuring almost 100 artists. TBS has been producing the show for three years now, and once again SMAP’s Masahiro Nakai and TBS announcer Shinichiro Azumi hosted.