‘A Multitude of Angels’ is a 4-CD set of recordings from a series of solo concerts in Italy in October 1996, documenting the conclusion of Keith Jarrett’s experiments with long-form improvisation in performances from Modena, Ferrara, Turin, and Genova. “These were the last concerts I played having no breaks within each set,” Jarrett explains in his liner notes. The arc of the music is characteristically comprehensive: “Jazz is ever present here, alongside my deep closeness with classical music (modern and ancient, Ives and Bach).”