Short answers, pulled from the story.
The Beatles credited the 1969 single to "The Beatles with Billy Preston" to reflect the extent of Preston's presence on the track. His electric piano is prominent throughout and he plays an extended solo. It was the only time an artist was named as a co-performer with the Beatles after the band began recording as independent artists.
Preston won two Grammy Awards at the 15th Annual Grammy Awards in 1973. He won Best Pop Instrumental Performance for "Outa-Space" and Album of the Year for his participation in The Concert for Bangla Desh. He received nine Grammy nominations over his career.
Preston played keyboards for the Rolling Stones on Sticky Fingers, Exile on Main St., Goats Head Soup, It's Only Rock 'n Roll, and Black and Blue. He served as their primary touring keyboardist from 1973 to 1977 and parted with the band in 1977 mainly due to a disagreement over money.
Billy Preston co-wrote "You Are So Beautiful" in 1974 with his regular songwriting collaborator Bruce Fisher. Preston wrote the song for his mother, Robbie Lee Williams, and it became one of Joe Cocker's biggest hits.
Preston was inducted into the Rock and Roll Hall of Fame in 2021 with the Musical Excellence Award. He died on the 6th of June, 2006, so the induction was posthumous.
Preston's biggest solo hit was the 1972 instrumental "Outa-Space", which reached number 2 on the US Billboard Hot 100, topped Billboard's R&B chart, and sold over one million copies in America. It also won the Grammy Award for Best Pop Instrumental Performance and was awarded a gold disc by the RIAA in June 1972.