Instrumentation Details

Vocal Soloists (11)

Boy soprano (1) · soprano (3) · alto (2) · tenor (2) · bass (3)

The listed solo voices can be expanded into a full choir.

Instrumental Ensemble

Trumpet (1) · tenor trombone (1) · water horn (1)
Percussion (2) · harp (1)

Electronics & Performative Roles

Loudspeaker ensemble · electronics
Conductor
Assistant (actor/percussionist)
Sound directors (2)

Additional Sound Sources

Car · elevator · glass tower · various sound equipment