Gregory Arthur Phillinganes (born May 12, 1956) is an American keyboardist, singer, songwriter, and musical director based in Los Angeles, California. A prolific session musician, Phillinganes has contributed to numerous albums representing a broad array of artists and genres. He has toured with artists including Stevie Wonder, Eric Clapton, David Gilmour and Toto, was musical director for Michael Jackson, and has released two solo studio albums.

Source: Wikipedia (https://en.wikipedia.org/wiki/Greg_Phillinganes)