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Mostly crappy rock music. It's Japanese rock music hince the J for Japanese. Most of the "singers" dress like women and follow the 70's glam rock idea. Although the music not lyrics are alright most of the lyrics when translated into english or even read in Japanese don't make sence. It's about as coharent as J-Rap and equaly bad.
Otaku-Oh my god J-rock is soooo much better then American or British rock!

Me-Japan is behind the times when it comes to rock and Japan should make their own style rather then steal it.
by Woogy January 06, 2005
Short for "Japanese rock."

see visual kei
Popular mainstream Japanese rock bands would be Glay, L'Arc~en~ciel, Dir en Grey, Malice Mizer and Kagrra.

Popular Japanese indie bands would be +D'espairsray+, Vidoll, Madeth Gray'll, Merry, and Aliene Ma'riage.
by Christina February 21, 2004
Japanese rock music.
I have a collection of great J-rock I got from Tokyo.
by Crono February 20, 2003
Japanese rock.

Broad term that encompases any rock music from Japan. Visual Kei is a subgenere of Japanese rock music, not an alternate name.
Mainstream bands: B'z, L'Arc~en~Ciel, GLAY
by Arachne June 03, 2005
J-rock is 'japanese rock' but shortened. It is basically rock music from japan. J-rock has progressed over the years, and now some j-rock albums you are now able to get in the USA more easier than before.

Most j-rock bands are found out over the internet, or animes. For instance, the j-rock band FLOW does the opening song for the anime Eureka Seven, The Pillows did the ending song for the anime FLCL, and Asian Kung-Fu Generation did several opening songs for the anime FullMetal Alchemist, all making the bands more popular and well-known throughout the USA.

Some people think j-rock is in it's own genre, but it is NOT it's own seperate genre of music. J-rock is just used to tell you the music is from Japan.
One popular j-rock band is Dir En Grey.
by AnticxGREY October 08, 2006
Japanese rock.
by Anonymous December 22, 2002
a music genre, also known as "japanese rock"
gackt, x japan, dir en grey etc.
by cuzza k August 16, 2003
An excellent music genre that used to have a humane, mature fanbase only a couple years back. These fans still exist, but most of the fandom has been taken over by anime freaks which has ticked off most original J-rock fans. These anime fans only listen to Dir en grey (actually, some haven't even heard a Dir en grey song in their life) and claim to listen to Malice Mizer and Moi dix Mois, just so they can obsess over Mana who they clearly know nothing about (that sucks considerably, as Mana is a great, talented musician, not just a pretty face). They claim to be huge J-rock fans after only naming these three bands, yet have never heard of others like Amadeus, Boom Boom Satellites, Soft Ballet, or Blam Honey.
Another mistake they make is confusing j-pop groups with j-rock..
by nightandday July 29, 2006