LOL sorry for giving out so many links, Nacho.

i just love those 3 groups the most!
but here's a condensed list, hehe.
TOKIO - Sorafune, SEISYuN, & Kimi wo Omou Toki
--Nagase's singing voice needs some getting used to. When my sister heard his singing voice, she got freaked out cuz his speaking voice & singing voice are very different.
KinKi Kids - Ai no Katamari, Kanashimi Blue, & Jounetsu
--i just love these 2. Koichi's my favorite! & i love Tsuyoshi's singing.
T&T - Kamen, Sotsugyou ~Sayonara wa Ashita no Tame ni~, & Kamira Tamara
--i love these 2 also. "One Day, One Dream" & "Sotsugyou..." were also used for Inu-Yasha!
awww, listening to "Feel your breeze" makes me nostalgic. Gokusen was one of my first j-dramas!