- Composed By – Christian A. Volf
The pieces were recorded on shellac 78 RPM records in 1936/1937.
The pieces are from a series of records, known as 'Volf Acustic Records' each containg sound within a specific frequency range.
The records was used in sound-therapy, according to the 'VOLFAIR'-method.
The Volf Acustic Records are possibly the first known recordings of 'electronic music' released on record.