Mathematician Marcus du Sautoy explains how Iannis Xenakis uses the symmetry of a cube to determine musical parameters in Nomos Alpha for solo cello; Paul Griffiths highlights the composer's innovations in the fields of sound and instrumental writing; and we hear an archive interview in which Xenakis credits his teacher Olivier Messiaen in helping him to find his own compositional voice.

Iannis Xenakis's Nomos Alpha

Artists, musicians and composers introduce fifty key pieces of classical music composed between 1950 and 2000. As featured in the BBC Radio 3 programme, Hear &amp; Now.

Music

Hear and Now presenter Sara Mohr-Pietsch celebrates the music of German composer Heiner Goebbels, focusing on the Suite for Sampler and Orchestra from his 1994 cycle Surrogate Cities.  Commentary comes from Graham McKenzie of the Huddersfield Contemporary Music Festival, and we also hear the voice of the composer himself.

Heiner Goebbels's Surrogate Cities

Composer Julian Anderson singles out Partiels for orchestra, from French spectralist Gerard Grisey’s cycle of works Les Espaces Acoustiques. With commentary from writer Paul Griffiths.

Gerard Grisey's Partiels

Composer John Woolrich nominates Stravinsky's last completed work with orchestra, Requiem Canticles. Commentator Paul Griffiths explains how this sparsely scored "pocket requiem", written in 1966 in a modern serial style, contains many of the hallmarks of his very earliest pieces.

Igor Stravinsky's Requiem Canticles

Novelist and critic Philip Hensher makes the case for Per Norgard's Symphony No.2, one of the first works in which the Danish composer used his own 'infinity series' to determine melody and form. With commentary from Paul Griffiths.

Per Norgard's Symphony No.2

Critic and Hear and Now presenter Tom Service nominates American composer John Zorn’s Carny, a work for solo piano from 1989.  The piece assembles a wide range of musical quotations and genres, juxtaposing Stockhausen and Bartok with cartoon music and boogie woogie.  Author and journalist Rob Young provides some background to the work and to Zorn himself, a highly regarded improviser and producer as well as composer.

Iannis Xenakis's Nomos Alpha

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