>>54912276 (OP)
>What are your favorite standards and what are the "definitive" versions of them for you?
Tenderly, Oscar Peterson
Softly as in a Morning Sunrise, Coltrane on Standards
I love Michel Petrucciani on Satin Doll and Round Midnight
>What are your favorite cover versions of standards or jazz compositions where the tune is reinvented?
James Booker's Sunny Side of The Street, although not really that jazzy https://www.youtube.com/watch?v=1SfZ40yGW_Y