found: Metheny, P. Pat Metheny Group [SR] p1978 (a.e.)container (Lyle Mays, piano, synthesizer, autoharp)
found: New Grove dict. of jazz(Mays, Lyle (David); b. 1953, Wisconsin; keyboard player and composer)
found: Guinness enc. of pop. mus., 2nd ed.(Mays, Lyle; b. Nov. 27, 1953, Wausaukie, Wis.; keyboard player)
found: Washington post WWW site, viewed Feb. 12, 2020(in obituary dated Feb. 11, 2020: Lyle Mays, a jazz keyboardist whose work, chiefly with the Pat Metheny Group, won nearly a dozen Grammy Awards, died Feb. 10 in Los Angeles. He was 66. He co-founded the Pat Metheny Group with guitarist Metheny in the 1970s, where he was a performer, composer and arranger. The group's fusion style incorporated rock, contemporary jazz and world music. Mr. Mays also was a sideman for albums by jazz, rock and pop artists. He helped compose soundtrack music for several movies. Lyle David Mays was born in Wausaukee, Wis., on Nov. 27, 1953)
found: New York times online, viewed February 13, 2020(obituary dated February 12, 2020: Lyle Mays; Lyle David Mays; born November 27, 1953, Wausaukee, Wisconsin; died Monday [February 10, 2020] in Simi Valley, California; keyboardist, composer, and arranger best known for his long association with the guitarist Pat Metheny)