01. RAINBOW
One of the songs that epitomises Ayu's career. It's so unique and powerful. The film clip is a freaking masterpiece and would make an excellent translation to English.
02. SEASONS
Tata Vega did a (somewhat nice) cover in English, proving the song can translate to English. A closer version would be amazing, though.
03. Sweet Season
This would have to be solely from my bias for the song but I can hear Ayu closing the song in English...
"I see the future you look down on me
it shines, it shines, it shines"
...and bloody hell it gives me goosebumps like nothing else
04. M
I'm not 100% sure on M, but I think it's a song that's so beautiful it should be accessible in more languages. Unfortunately I don't think it would be as good as the original but I'd be delighted to hear an alternative version
05. GAME
An awesome song in itself, it's got the change from slower song to faster that would lead into much faster-paced songs.
06. Rule
I think it would fit in well with Western tastes, though I was tossing up with this and Sparkle
07. 1LOVE
I love Ayu's voice in this song, though it would probably sound weird in English looking over the lyrics again xD They'd probably need to be "kickassed" up a bit!
08. appears
I really like the story in appears. (yes, that's my entire reasoning)
09. Real Me
A very catchy song with amazing lyrics, even if the English pronunciation and grammar is off a bit a re-recording could fix all of that.
10. Pride
This song's also been covered in English by Sweetbox but I love Ayu's lyrics more. Its simple melody makes it a perfect breakthrough track for Ayu.
11. Ladies Night
One of Ayu's catchiest songs, this could sound amazing in English, too.
12. GREEN
The "Asian" feel of GREEN would make it a great bridge between English and Japanese songs for new listeners.
BONUS TRACK. Who...
It has a Chinese version, why not add an English one?
Man.........I've wanted to write my own SELs for Ayu's songs for years. I should really do that sometime!!!