Danse macabre, Op. 40, is a tone poem for orchestra, written in 1874 by the French composer Camille Saint-Saëns. It premiered 24 January 1875. It is in the key of G minor. It started out in 1872 as an art song for voice and piano with a French text by the poet Henri Cazalis, which is based on an old French superstition.
In 1874, the composer expanded and reworked the piece into a tone poem, replacing the vocal line with a solo violin part.
Danse macabre, as a theme, was meant to represent how death was the great social equalizer — no one escapes the dance with death — and there were a number of paintings and pieces of art inspired by this philosophy. When Saint-Saëns initially wrote his Danse macabre in 1872, it was actually an art song.