American release time is very different.
Single - with about more than half the the entire soundtrack is released about a week in advanced, and usually a music video to promote the album.
Album - The full album is released right after the single
Single - Music Videos are produced after the songs, as they pick it
Single - blah
THEN
New album so close together
Japan release time is, I think the best.
Single - 1 to 3 songs from the full album, mostly self produced except boa
Single - 1 to 3 blah
Single? - A single after 2 is usual with Ayumi, blah
2 months later, the ALBUM is released...
Then...
New Single
---------
Personally I hate the US release times, because COMPANIES ALWAYS want more profit, how to make more profit? You anticipate them to get them and music videos etc with singles before a whole album. I always thought this was the way to go, but it was only Japan.
Japan's overall situation is a lot better, instead of calling it a music video there called PROMOTIONAL VIDEOS = PV, and in America instead of Promotional Video, other than the first one that is promoted with the album, everything afterward is a music video because it's made after the album release, it's promotion but it's more music...
What do ya think?

I know...I don't make good long posts