Austrian composer Arnold Schoenberg is widely regarded as one of the most influential musicians of the 20th century. Born in Vienna in 1874, Schoenberg's early works were characterized by their use of tonality, but he soon began to experiment with atonalism, a technique that rejected traditional melody and harmony. His music was influenced by a range of sources, including Romanticism, National Socialism, and avant-garde movements.

Schoenberg's most famous works include his String Quartets, which are considered some of the most complex and innovative pieces in the classical repertoire. His Verklärte Nacht for string sextet is also widely regarded as a masterpiece, and his opera Moses und Aron is considered a landmark work of the 20th century.

Despite facing significant opposition during his lifetime, Schoenberg's music has had a profound impact on Western classical music. His Second Viennese School, a group of composers including Anton Webern and Alban Berg, played a key role in the development of modern classical music. Today, Schoenberg's music is performed and studied around the world, and his influence can be heard in a wide range of musical genres.

Schoenberg's legacy extends beyond his music. He was a profound thinker and philosopher, and his writings on music and aesthetics continue to be widely read and studied. His Theory of Harmony remains a seminal work in the field of music theory, and his Music and Speech has been particularly influential in shaping modern thinking on music and language.

Throughout his life, Schoenberg remained committed to his artistic vision, even in the face of intense pressure and criticism. He died in 1951, but his music continues to inspire and challenge audiences around the world.