Sechs Lieder (Six Songs), Op. 68, is a collection of six Lieder (German art songs) by Richard Strauss. He composed them, setting poems by Clemens Brentano, in 1918 for soprano and piano, and orchestrated one in 1933 and five in 1940. The piano version was first published by Adolph Fürstner in Berlin in 1919. They are also known as Brentano Lieder.