Genre of some music that i like and where I candownload it.?

I like some songs but I don't know their Genre and i am really sufferimg a paon thats almost physical. For example Tori No Uta sung by Lia is the Song that has been causing me this pain. Before that there was this Music I heard in this game online. The game is called Flipside and you can find it in www.nitrome.com. Please Tell me the genres of These types of songs and where i Cam download them. Youll really be giving me peace of Mind and Heart.