Story behind the CAPS and lowercase song titles?

[evolutionricky]

Do japanese just not care about how the song titles are in english? Seems they don't really care if the song has caps at the beginning and sometimes the whole song title is in caps. examples from ayu songs...

SURREAL
UNITE!
SEASONS
ANGEL'S SONG
HEAVEN
TO BE

and

walking proud
girlish
rainy day
fairyland
everywhere nowhere
alterna

Many other J-pop artists do this too....why is it?