Ummm i'll try to remember most of these, but its been very long time for some of these.
L'Arc~en~Ciel - Heart
Ayumi Hamasaki - LOVEppears
Namie Amuro - Concentration 20
BoA - Listen To My Heart (JPN)/ID Peace B (Korean)
Kumi Koda - affection
B'z - Magic [I only recently got into em a few years ago, but I've fallen in love
]
DOUBLE - Vision
Crystal Kay - Spin The Music [another recent one for me to fall in love with
]
Mika Nakashima - LOVE
MISIA - Mars & Roses
Yuna Ito - Heart
Hikaru Utada - Distance
2NE1 - To Anyone
Do As Infinity - Deep Forest
MiChi - Up To You
alan - Voice of Earth
Hitomi Shimatani - Tsuioku+LOVE Letter [i first got into her cause of ANGELUS, which still to this day i find SOOO addicting
]