Liquid Tension Experiment (LTE)
is an American instrumental progressive metal supergroup, founded by Mike Portnoy, Dream Theater's drummer, in 1997. The band has released two albums through Magna Carta Records. A third album, with the absence of John Petrucci was released in 2007 under the name "Liquid Trio Experiment". A live album with the absence of Jordan Rudess (mostly) was released in 2009 under the name "Liquid Trio Experiment 2". Three live albums and two videos were released in 2009 by the complete band.
Active up until 1999, when Jordan Rudess formally joined Dream Theater, the band reunited in 2008 for a series of live shows, and eventually reconvened in 2020 to record a third studio album featuring all members of the band, slated for a spring 2021 release.