Wikipedia
Totentanz : Paraphrase on Dies irae, S.126, is the name of a symphonic piece for solo piano and orchestra by Franz Liszt, which is notable for being based on the Gregorian plainchant melody Dies Irae as well as for daring stylistic innovations. The piece was originally planned in 1838 and completed in 1849; it was then revised twice, however, in 1853 and 1859.
Totentanz is a composition for baritone, mezzo-soprano, and orchestra by the British composer Thomas Adès. The work was commissioned by Robin Boyle in memory of the composer Witold Lutosławski and of his wife Danuta. Its world premiere was given in Royal Albert Hall during The Proms on July 17, 2013 and was performed by the baritone Simon Keenlyside, the mezzo-soprano Christianne Stotijn, and the BBC Symphony Orchestra under the direction of Adès.