Automatic double tracking delay (or, in the phaser, a variable phase network). Other notable uses of ADT doubling echo are apparent on select material by Elton John. Some examples of this can be heard on Nigel Olsson's drums, especially the tom toms, on songs such as Don't Let The Sun Go Down On Me from the Caribou album, as well as Better Off Dead and Someone Saved My Life Tonight on Captain Fantastic And The Brown Dirt Cowboy. ADT became the standard recording studio technique for simulating double tracking throughout the late 1960s and 1970s until the arrival of digital technology in the
Dee Murray album, but this changed with "Honky Château" in 1972 when John exerted some of his skyrocketing popularity at the time to convince DJM to allow Murray and Olsson to also become full-time recording members of his band, so along with fellow new recruit Davey Johnstone on guitars, banjo, mandolin, sitar, fretted string instruments and backing vocals, Murray and Olsson played on John's hit albums, including the milestone album "Goodbye Yellow Brick Road", singles, and world tours for several years. In 1975, after recording "Captain Fantastic and the Brown Dirt Cowboy", Murray and Olsson were released from the band because John