Gore Beyond Necropsy (GBN) (currently known as Noise A-Go-Go's) is a musical group formed in 1989 in Hadano city, Kanagawa prefecture, Japan. The group have had a prolific output of releases. They play a hybrid style of chaotic grindcore which they refer to as "Analdrillinggrind Harshit Core!!".
In 1997, Gore Beyond Necropsy undertook their first tour outside Japan when they toured Australia with Victoria's Warsore and returned the compliment by arranging Japanese dates for Warsore and issuing a split 7-inch single through Sterilized Decay Records. As well as doing numerous split releases, they have also collaborated with Japanese noise artist Merzbow. Their shared album Rectal Anarchy release by Relapse Records was far from subtle; the album cover was graced by an enlarged anus and the songs were warped cover versions revolving around the theme of scat.
In 2005, the band changed its name to Noise A-Go-Go's.