Clarion/Whisper is a song cycle composed by Gian Slater for the full 17-voice incarnation of Invenio. Since its inception in 2010, Invenio has focused primarily on wordless and extended vocal compositions, creating a world of vocal sound that is rarely heard. This new song cycle explores text and song-form with an urgent, dynamic intensity that throws itself between minimalist unison and 8-part layered complexity; hushed text and extended pop exultation; clarion call and delicate whisper. The 50- minute work comprises eight songs that feature the full ensemble throughout, highlighting the individual singers, varying groupings and the unity of the whole ensemble. As each piece ends, an improvised motive begins that cues the singers to move into new positions, creating a moment of reflection and pause within the world of this work.