My favorite type of song is anything that's hard but also melodic. A few good examples would be the bands Nightwish and Vanden Plas
The type of song which I like depends on the mood which I am interested to listen to...There is no particular type..
I have heard some of the songs made by Arashi and some anime songs and I really like to listen in it...I do really like Wish and Love So Sweet ...With Anime songs I really like Hajimare No Kaze
Many types ! Mostly: Pop Punk/Power Pop/Emo & Metal When I'm sad or thinking of gf: R&B When I'm hyper of bored: Death Metal/Metal Rarely: Hip Hop