Symphony No. 3, composed by Gustav Mahler in 1896, is one of the longest symphonies in the standard repertoire. It consists of six movements and explores themes of nature, love, and humanity. The work is notable for its rich orchestration and emotional depth, showcasing a wide range of musical styles and influences. The symphony features a large orchestra, including brass, woodwinds, and strings, along with a children's choir and a solo mezzo-soprano in the final movement. Each movement presents distinct musical ideas, culminating in a powerful conclusion that reflects Mahler's philosophical outlook on life and existence.