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Di Piazza discovered the bass in 1979. Already a self-taught guitarist, DiPiazza developed a distinctive, but unorthodox 'closed palm' technique of picking with the right hand thumb, index, and middle fingers, giving him a speed not often heard in electric bass players.
A member of the John McLaughlin Trio" from 1991 to 1992 along with Trilok Gurtu a world tour of 300 concerts and an album Que Alegria. He influenced numerous bass players in Europe and the USA such as Matthew Garrison, Adam Nitti, Lucas Pickford.