20s jazz seemed old quickly. My mother, born 1922, loved jazz, Gershwin to Brubeck and beyond, but 20s stuff always irritated her. I understood perfectly why Baz Luhrmann used hip-hop for his “The Great Gatsby.” He wanted the music to be edgy, frenetic, and irritating to adults. That’s what Bix and friends were, but they quickly became “music that grandma likes.” It takes work to get past that.