This musical work translates the existential inquiry of Walt Whitman’s poetry into a structured cantata for high voice and instrumental accompaniment. The composition explores the soul's transition into the unknown, utilizing a five-part structure that mirrors the progression of Whitman's verses. The protagonist, represented by the high voice, navigates a series of philosophical questions regarding mortality and the release of the spirit, while the instrumental arrangement provides a shifting harmonic landscape that underscores the tension between physical reality and metaphysical departure.

This composition is regarded as a significant example of mid-twentieth-century vocal writing that bridges the gap between literary tradition and avant-garde musical expression. The work is noted for its ability to capture the transcendental spirit of Whitman's poetry through a demanding and expressive vocal line. Listeners and performers often highlight the stark contrast between the intimate piano version and the more expansive eight-instrument arrangement. The piece remains a staple for vocalists seeking to explore the intersection of modern classical composition and classic American verse.