"Moonglow" is a warm, swinging performance from Billie Holiday's 1952 album Solitude, featuring Will Hudson and Irving Mills's popular standard in a 32-bar AABA form at approximately 117 bpm in G. Trumpeter Charlie Shavers provides the track's sole instrumental solo, a half-chorus improvisation that showcases his brilliant technique while maintaining the relaxed, dreamy atmosphere suggested by the song's title. Shavers's solo is a model of concision, packing melodic invention and rhythmic flair into a compact statement that enhances rather than overshadows Holiday's vocal interpretation. The medium swing tempo allows Holiday to stretch phrases and compress them at will, her rhythmic freedom creating the illusion of effortlessness that is the hallmark of great jazz singing. The Solitude album, recorded for Norman Granz's Clef Records label, surrounded Holiday with some of the era's finest jazz musicians, and the chemistry between the singer and her accompanists is evident on every track. "Moonglow" captures Holiday at a moment when her artistic maturity and technical command were in ideal balance, producing a performance that is simultaneously casual and profound.