By Jennifer Moses I’m 62, and like so many women of my generation, I came of age in thrall to the singer-songwriter Joni Mitchell: her shimmering blonde beauty; her enchanting melodies; her autobiographical lyricism; her open tuning, daring riffs, artistic ambition, and love affairs. Nothing she sang didn’t strike a chord in me as I threw myself into my own love affairs, poeticism, ambition, and desire to somehow let my voice be heard. You know the story. Everyone knows the story. By the time she was in her mid-20s Joni Mitchell was a star. Soon thereafter she was world-famous, with new record…