J-Rock is used as a short form for Japanese Rock Music or Japan Rock, is the Japanese term for local rock music.
Outside Asia, the abbreviations J-Rock and J-Pop summarize, in most cases, everything that modern Japanese music reaches in Europe and America.
The Japanese themselves, however, do not necessarily differ according to these terms, since these are shaped and defined in the west. The sound repertoire of many Japanese bands, compared to European or American, often includes several styles. Beginning with ballads, pop, rock and metal elements and classical music, numerous other components are used, which change from album to album, if not from song to song, and make a clear style definition almost impossible. Not infrequently even different styles are combined in one song.
Nevertheless, many bands can at least be assigned to the rubrics J-Pop or J-Rock on the basis of the general understanding of rock and pop music. Often, J-Rock has Shred elements with many complicated, high and fast guitar solos.