A friend of mine who lived in Japan told me Hanabi played A LOT on radio (actually, he hates jpop, so, he only know the really popular songs) and there's a video of a Gay Pride Parade in Tokyo where people are singing Independent
July 1st still is sang on every a-nation and Greatful Days always had tons of A-nation performances...
It only seens that ther triple a-sides are big summer hits, and as a consequence, mostly remembered on summer