Jpop= Japanese Music. And yes, I have heard of it espically on YesAsia.com where they sell all of the albums from Asia . Good Jap singers= Utada and Ayumi..
I'm not so fond of Utada...but Ayumi's always good and so is BoA, Gackt, and Namie...though I listen to Cpop more than Jpop since I actually understand it
I don't like jpop... but I listen a bit of jrock, and some bands are good^^ Especially The Back Horn, they're my favourite jrock band! But I don't like the Visual Kei... I think they have a total different conception of music... based just on the look :?