Liquid Tension Experiment is an instrumental progressive rock/metal project, founded by drummer Mike Portnoy, in 1997. The band has released two albums through Magna Carta Records. A third album, featuring three members of the band, was released in 2007. In recent years Portnoy has stated that he would not be opposed to recording a third album.

Liquid Tension Experiment was an instrumental progressive rock project consisting of Dream Theater members John Petrucci (guitar), Jordan Rudess (keyboard), and Mike Portnoy (drums), as well as progressive rock icon Tony Levin (bass, Chapman Stick) of King Crimson . The combo was formed as a side project to Dream Theater in 1998. Rudess was asked to join the band largely because of the success of the Liquid Tension Experiment; Mike Portnoy mentioned it in the introduction of the “Liquid Drum T