DAI and HAL on Ayu's albums

[Ayame]

I've been wondering... in the song credits on several albums, "DAI" and "HAL" are featured. Is "DAI" Do As Infinity and "HAL" the singer HAL, or is it just some other people with the same initials/names?

[ImpactBreaker]

D.A.I is Dai Nagao from Do As Infinity. He used to be a main member from Do As infinity but he quite decided to hide himself in the shadows LOL

H/\L is a group consisting of two guys who makes songs & remixes. Later on they got the vocalist H/\LNA to release their own songs. Of course H/\LNA doesn't help on anything relating to Ayu songs since she's only a vocalist.

[Ayame]

Ah, I see... Thanks a lot!

[gakkun]

That solves it, I always thought H/\L was a female vocalist/DJ. o_O

[Findlay]

In my RAINBOW album booklet it says "arrangement : HAL (Toshiharu Umesaki , Takehito Shimizu , Yuta Nakano)" so any ideas?