ako fave ko lahat nang may natural vibrato/tremolo at magaling mag-piano... pinakikinggan kong mabuti ung boses nila, next ung arrangement ng songs ... I don't care much sa hitsura, actually.. pero a plus pag good-looking syempre 
artists with natural vibrato ♥:
Gackt, Klaha, Jui of Vidoll, Tatsuya Ishii, Kawabata Kaname of Chemistry, T.M. Revolution (pinakamaraming vibrato LOL), Morrie of Creature Creature, Mao of SID, Sakurai of Buck Tick, Utada Hikaru, YUI (very minimal vibrato), and vox of 176BIZ, 12012
artists with no vibrato/with developed vibrato:
SPITZ, Remioromen, Ayaka, Laruku/Hyde, Atari Kousuke, UVERworld, Ringo Shiina, Bonnie Pink, Asian Kung Fu Generation, Monkey Majik, MYV, Ikimonogakari, Do as Infinity, Natsukawa Rimi, Nakashima Mika, Rythem, Alice Nine, Gazette, Oda Kazumasa, Crystal Kay, Tamaki Nami, AAA, Sakamoto Maaya, Shimokawa Mikuni, etc...
magagaling mag-piano:
Gackt, Aki Angela, Sukima Switch, Yoshiki of XJapan, Younha
Why I listen to JMusic?
Japanese music, mapa-pop o rock, it's just different.. very unique and stylish... nakakasawa kasi ung music na nakalakihan na ng mga Pilipino, lalo na ung tunog Western na...
Sakin din, it started with anime soundtracks. In my case, I sing talaga dati, so I'm looking for good influences. Wala akong vibrato dati kaya I dwelled on artists na may vibrato. Frustrated akong matuto ng piano kaya I liked artists na magaling mag-piano...
For me, kung singer ka, you don't just sing tapos, tapos na. More on vocals kasi ako tapos sabi ko nga, ung arrangement na. Sa Japanese, hirap akong maintindihan ang lyrics so last na lang un... pag nakita ko na lang ung translation.. ^__^ Tsaka ung pag naramdaman ko na ung passion sa pagkanta, ung parang nadadala na'ko ng kanta, dun ko talaga naa-appreciate ang song. Kaya I love JMusic.