Hildegard Kleeb performs Music for Piano with Amplified Sonorous Vessels (1990) by Alvin Lucier, also available on the CD Panorama, with other beautiful works by Alvin Lucier:
A Letter from Schoenberg (1996) by Peter Ablinger.
Listen first to the version without text:
And listen now to the version with text added:
Intona (1991) by Dick Raaijmakers
Audio Ballerina’s by Benoît Maubrey: