Errol Thompson, better known as "ET" (December 29, 1948 – November 13, 2004) was a record producer, audio engineer, and one of the first studio engineers to be involved in dub music. He was fellow producer Joe Gibbs's partner—the two were known collectively as the Mighty Two. In the 1970s he worked (along with Niney) as an engineer at Randy's Studio 17, in Kingston, Jamaica. He was the engineer on the first reggae album without vocals, Derrick Harriott and the Crystalites' The Undertaker, in 1970. Thompson engineered tracks by Bob Marley, The Abyssinians, Augustus Pablo, Big Youth, Prince Far I, Culture, Dennis Brown, Yellowman, Frankie Paul and Burning Spear. He also worked with Clive Chin. In addition Thompson produced work by I-Roy, Cornell Campbell, Freddie McGregor and Barrington Levy. His final project was also a major success the Hard Times Riddim, co produced with Stephen Gibson son of late great Joe Gibbs. This work was powerful because of its impact at the time, these records created a resurgence in dancehall. The album comprised many key reggae performers of the time including: Capleton, I Wayne, Richie Spice, Chuck Fenda, and Luciano (singer).