Solo live performance is probably the ultimate challenge for most jazz musicians–improvisation is a high-wire act where good bandmates function as a net. There are no off nights when you play solo—and if you do run out of ideas, you stop or, worse, coast. The first solo effort in a long and storied career of Branford Marsalis, In My Solitude finds the saxophonist (on tenor, alto, or soprano) up to the challenge; he mixes standards, originals, improvisations, and highbrow classical, closing with the theme song to The Carol Burnett Show. All of it resonates elegantly in this landmark setting.