[1] His palette of keyboards (including Minimoog, Clavinet, Mellotron, and piano) was an important ingredient in the group's sound, especially on the albums A New World Record (1976), Out of the Blue (1977), Discovery (1979) and Time (1981).

[2] Tandy was born on 26 March 1948 in Birmingham, Warwickshire and educated at Moseley School, where he first met future bandmate Bev Bevan.

[3] Tandy would later be reunited with Bevan in 1968 when he played the harpsichord on The Move's UK number one chart single "Blackberry Way" and briefly joined them live playing keyboards, but switched to bass while regular bassist Trevor Burton was sidelined due to a shoulder injury.

[4] Tandy joined Electric Light Orchestra (ELO) in 1971, replacing previous bass guitarist Rick Price.

In 1972, Tandy served as the bassist in the first live line-up of ELO, before becoming the band's full-time keyboardist after the departure of Bill Hunt who left with Roy Wood to form Wizzard.

[7] In 2013, Tandy joined Lynne in performing two songs for Children In Need Rocks, "Livin' Thing" and "Mr Blue Sky".

Tandy lived variously in Birmingham, France,[11] and Los Angeles,[10] but by the early-to-mid 2010s, he resided in Wales.