This collection investigates the technical and expressive requirements for performing two specific concert arias composed by Hans Werner Henze. The work provides a formal musical score and performance notes intended for vocalists and instrumentalists seeking to interpret Henze's distinct mid-twentieth-century modernist style. By presenting these scores, the publication serves as a primary resource for academic study and professional concert performance of the composer's vocal repertoire.

This publication is regarded as a standard reference for music libraries and vocal performers specializing in contemporary classical repertoire. The material provides the necessary technical foundation for an informed performance of Henze's complex vocal compositions.