There are at least 8 bands / artists who have released music under the name "K2". 1) K2 is the personal noise project by Kimihide Kusafuka since 1983. He had been influenced by early punk rock, no wave ("No New York"!), and industrial music in the late '70 to early '80. The first period of K2 activity had been related to mail art and music betaween 1983 to 1986. He had made many cassette works and exchanged them with domestic or world-wide mail art/music artists and labels, although he had not done any live shows.