This publication provides the necessary musical notation for the performance of Constant Lambert's choral work, The Rio Grande. It serves as a practical resource for conductors, vocalists, and instrumentalists to interpret the composer's original score based on the poetry of Sacheverell Sitwell.

Musicologists and performers recognize this score as the standard reference for staging Lambert's jazz-influenced choral composition. The inclusion of alternative percussion arrangements makes this edition particularly useful for ensembles with varying resource availability.