About the Bruckner Os justi for trombone ensemble
The Bruckner Os justi for trombone ensemble arranged by Aron Simon transforms one of Bruckner’s most luminous sacred motets into a sonorous brass setting. Composed in 1879, Os justi (“The mouth of the righteous”) reflects Bruckner’s deep faith and mastery of a cappella choral writing. Moreover, it stands as one of his most performed sacred works.
Instrumentation in the Os justi trombone ensemble arrangement
Aron Simon scored this version for 7 tenor trombones and 1 bass trombone. In addition, the bass trombone provides a firm foundation, anchoring the harmonies with warmth and depth. The trombone choir’s unified timbre mirrors the purity of a choral ensemble. As a result, the music retains its clarity while gaining new tonal richness.
Musical character
Os justi is written entirely in the Lydian mode, which gives the work its distinct and uplifting colour. Furthermore, the motet flows with smooth, chant-like lines and rich harmonies. In the trombone ensemble version, the sustained chords and blended tone create an almost organ-like resonance. Therefore, the brass timbre enhances both the majesty and the contemplative qualities of the piece.
Performance video
The Project One Trombone Choir performs this arrangement in a public video recording. Their interpretation demonstrates the work’s clarity, balance, and spiritual intensity. In addition, it proves how effectively brass instruments can convey the essence of Bruckner’s choral writing.
Technical and musical aspects
Players must maintain perfect intonation across long, sustained phrases. For this reason, breath control, legato, and dynamic shaping are essential for an expressive performance. However, the result is rewarding for advanced trombone ensembles seeking both beauty and challenge.
Availability
This Bruckner Os justi for trombone ensemble edition is professionally engraved and includes a full score and individual parts. It is available as a digital download or printed edition with priority shipping.
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