Listening:
Pierre Boulez (b. 1925): Sonata no. 2 (1948) (1st movement)
Luciano Berio (1925-2003): Sequenza IV (1966) (score: M25 B476 S41;
recording MP25 S86 K5)
Luigi Dallapiccola (1904-1975): Quaderno Musicale diAnnalibera (1952)
Karlheinz Stockhausen (1928-2007): Klavierstuck III (1952) and IX
(1954) (score: M25
S755 no. 9; recording MP25 S86 K5; comdisc 9849)