Wo bist du Licht!

Wo bist du Licht!

is a 1981 piece for mixed orchestra, mezzo-soprano and tape by Canadian composer Claude Vivier.

[1] Vivier completed the piece in early 1981, on a commission from the Canadian Broadcasting Corporation.

[1] The notes given by Vivier in the finished manuscript describe it as follows: "A meditation on human suffering, this piece is intended as one long continuous melody.

The music can be perceived from three different aspects: formal, melodic, or textual.