Dialogue de l'ombre double (Dialogue of the double shadow) is a mixed work by Pierre Boulez for clarinet and electroacoustic device composed in 1985.
[1] There exists a version for bassoon, for saxophone, for traverse flute and for recorder, each made by the performer themself.
[2] The clarinetist dialogues with his/her shadow, represented by a part of clarinet pre-recorded on magnetic tape and spatialized by means of loudspeakers dispersed around the audience.
The version for saxophone was premiered on June 23, 2001, at the Théâtre des Bouffes du Nord, by Vincent David [fr].
[2] The version for traverse flute was premiered in May 2002 in San Francisco by Cécile Daroux [fr].