Krzysztof Penderecki

Krzysztof Penderecki's signature

One of Delia's Attic Tapes contains Krzysztof Penderecki's piece De Natura Sonoris.

He created three such pieces

• De natura sonoris No.1 (1966)
• De natura sonoris No.2 (1971)
• De natura sonoris No.3 (2012)

but the "No.1" was appended later, so presumably Delia's tape is of the first.

Availability

• Krzysztof Penderecki: De Natura Sonoris (1966) on youtube