Conductor and composer Esa-Pekka Salonen celebrates the music of Polish composer Witold Lutoslawski and his landmark work from the early 1960s, Jeux Venitiens. Writer Paul Griffiths explains how the composer used chance within the score to create rhythmic complexity; and we hear from Lutoslawski himself, in conversation with Thea Musgrave in 1973.

Composer Matthew Shlomowitz makes the case for Austrian composer Bernhard Lang’s Differenz/Wiederholung 2, a setting of texts by Gilles Deleuze, William Burroughs and Christian Loidl. Commentator Graham McKenzie highlights the jagged soundworld of this music, and the composer’s use of repetition.

Author and journalist Rob Young nominates French composer Eliane Radigue's Songs of Milarepa, which combines drone-like electronics with the voices of Lama Kunga Rinpoche and Robert Ashley singing and reading the words of the 11th-century Tibetan Buddhist poet Jetsun Milarepa. With commentary from Richard Whitelaw, Head of Programmes at Sound and 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.

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.

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.

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.

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.

Pianist Nicolas Hodges nominates Jean Barraque's Chant apres chant, one of just a handful of surviving works by this contemporary of Boulez and Stockhausen whose death in 1973 at the age of 45 robbed the contemporary music world of one of its most innovative and deeply expressive voices. With commentary from writer Paul Griffiths.

Sound artist Kaffe Matthews on Alvin Lucier’s I am sitting in a room and how it’s provided an inspiration for her own work in the field of site specific music; David Toop explains how the piece explores both the acoustic properties of enclosed spaces and the complexities of the human voice; and we hear from the composer himself about his approach to live performance.

Critic and Hear and Now presenter Ivan Hewett nominates Hungarian composer Gyorgy Kurtag's Officium Breve in memoriam Andreae Szervanszky for string quartet. With commentary from writer Paul Griffiths.

Singer and conductor Paul Hillier celebrates Terry Riley’s icon of musical minimalism and monument to the experimental atmosphere of 60s West Coast America, In C. With commentary from Richard Bernas.

Composer and Hear and Now presenter Robert Worby singles out V of IV, an early electronic work by American pioneer Pauline Oliveros; author and journalist Rob Young provides the background to this period of her work, and we also hear from the composer herself.

Gavin Bryars's mould-breaking 1971 score Jesus' Blood Never Failed Me Yet is a work which came about almost accidentally, when Bryars found a recording of an elderly homeless man singing lines from a Victorian hymn. Cultural historian Robert Hewison makes the case for why the work is important, and commentary comes from author and musician David Toop.

Four Tet’s Kieran Hebden explains why Silver Apples of the Moon by the American composer Morton Subotnick stands out for him as a classic of early electronic music. Author and journalist Rob Young provides some background to the work, which was created on a Buchla synthesizer at the San Francisco Tape Music Center, and conceived specifically for two sides of an LP.

Cellist Frances-Marie Uitti celebrates the music of Giacinto Scelsi, the Italian composer from an aristocratic background whose work looks to the East for inspiration. Ygghur is Sanskrit for catharsis and is the final part of Scelsi's autobiographical La Trilogia. With commentary from Paul Griffiths.

Pianist Pierre-Laurent Aimard champions the music of maverick German composer Helmut Lachenmann and his 1980s work for ensemble Mouvement (- vor der Erstarrung); conductor Richard Bernas explains how the use of unconventional playing techniques created a rich and highly crafted soundworld the composer has described as "musique concrete instrumentale".

Violinist Alexander Balanescu recounts his part in Michael Nyman's groundbreaking score for Peter Greenaway's 1982 feature film The Draughtsman's Contract; while commentator Gillian Moore links Nyman's work to the British experimental music tradition.

Author Paul Griffiths singles out this early work for ensemble by Danish composer Hans Abrahamsen, a sonic evocation of nature which takes its name from a poem by Georg Trakl; Gillian Moore highlights some of the other influences at work, including the pictures of M.C. Escher, one of the piece’s dedicatees.

The soprano Barbara Hannigan celebrates Claude Vivier’s profoundly moving work for soprano and orchestra, Lonely Child. Vivier conceived the piece as one single melody, with the entire orchestra "transformed into a timbre", to create "great beams of colour". Writer Paul Griffiths explains how Stockhausen, Gregorian chant and the traditional music of Bali all contributed to this composer’s distinctive soundworld.