Michael T. Mainieri Jr. (born July 4, 1938)[2] is an American vibraphonist, known for his work with the jazz fusion group Steps Ahead.

[3] Mainieri was born in The Bronx, New York, United States.

[2] Mainieri was a pioneer in introducing an electronic vibraphone, known as a synth-vibe, and has recorded with such musicians as Buddy Rich, Wes Montgomery and Jeremy Steig.

[7] He has also released numerous albums and videos as a leader for a variety of labels, most notably his 1980 album for Warner Bros. titled Wanderlust, which featured Michael Brecker and other members of Steps Ahead.

[1] Studio albums Live albums With Dire Straits With Eliane Elias With Art Farmer With Michael Franks With Tim Hardin With Don McLean With Buddy Rich With Carly Simon With Paul Simon With Sonny Stitt With Kazumi Watanabe With others