Most influential classical music works of the 20th century

A titanic and strange work that reflects on the debts composers owe to the past and music's future. Its third movement famously incorporates large chunks of Mahler's Symphony No. 2, creating a complex tapestry of musical references.

A masterpiece of Impressionism, 'La Mer' is revolutionary for its shimmering waves of sound and atmospheric quality, evoking the essence of the ocean rather than literally portraying it. It shattered expectations that revolutionary music must be aggressive or discordant.

This opera was staggeringly original and successful, cementing Strauss's reputation as an opera composer and a voice of modernism. Its 1906 performance was a significant event, rewriting the rules of what could be shown on the operatic stage and the kind of music that could emanate from the pit.

Described by conductor Wilhelm Furtwängler as 'the first nihilist work in the history of music,' this symphony begins as a 'hero symphony' but introduces hints of misgivings, reflecting a dangerous and unstable world. Mahler was one of the composers pushing the bounds of post-Romantic symphonic writing at the turn of the century.

This monodrama is a key work in the development of atonality and Expressionism, showcasing Schoenberg's move away from traditional tonality. It's essential for demonstrating the 'emancipation of dissonance'.

This work is highly regarded for its innovative use of instrumentation, folk influences, and unique formal structure, making it a seminal piece in 20th-century music. Its distinctive sound world and architectural design set it apart.

This opera is a cornerstone of 20th-century opera, known for its intense expressionism, atonal language, and powerful dramatic impact. It sears with high-wire lyricism and explosive climaxes, influencing contemporary music on stage.

This eighty-minute monster bathes audiences in 'sickly sexiness' with its noisy, twittering exoticism. It demonstrated how traditional harmonic structures could be used strangely in conjunction with avant-garde compositional techniques, making it indispensable.

This work is a significant example of integral serialism and a pivotal piece in the post-World War II avant-garde movement, known for its complex structures and innovative use of timbre. It pushed the boundaries of musical organization.

A groundbreaking work in electronic music, it was one of the first to combine electronic sounds with a human voice, pushing the boundaries of musical composition and sound manipulation. Its innovative approach opened new sonic possibilities.

While a musical, its score is highly influential in classical music for its sophisticated orchestration, integration of jazz and Latin American rhythms, and dramatic power, making it a staple of 20th-century music. It blurred the lines between genres.

This piece is famous for its use of micropolyphony, creating dense, slowly shifting sound masses without traditional melodies or harmonies, profoundly influencing film scores and avant-garde music. It redefined orchestral texture.

A seminal work of minimalism, 'Drumming' explores phasing techniques and repetitive rhythmic patterns, creating a hypnotic and immersive musical experience that significantly influenced subsequent minimalist composers. It defined a new aesthetic.

This iconic work famously blends jazz and classical elements, immediately posing the question of what constituted American music. It was a bold and successful experiment in fusing popular and classical styles, influencing future cross-genre compositions.

This controversial and highly influential piece consists of performers remaining silent for the duration of the specified time, challenging the very definition of music and highlighting the role of environmental sounds and audience perception. It covers aleatoric music and the use of silence, making people question the meaning of music.

An intense and powerful masterpiece of atonal writing for a large string orchestra, known for its high registers, glissandi, and tremulous chord clusters that create an aural assault. It serves as a salient reminder of the horror of nuclear warfare.

Adams's breakout work gathers threads of late 20th-century symphonic thinking, boldly asserting that tonality is still alive, contrary to Schoenberg's earlier declarations. It adapts musical ideas from composers like Sibelius, Debussy, and Mahler with modern compositional techniques such as minimalism.

Pärt's work is a significant example of his tintinnabuli style, characterized by its meditative quality, simple harmonies, and profound spiritual depth, which had a considerable impact in the late 20th century. It offered a stark contrast to prevailing avant-garde trends.

This symphony brought Rautavaara international recognition, showcasing his unique blend of mysticism and post-romanticism. Its ethereal beauty and profound spiritual themes resonated deeply with audiences worldwide.