Sechs Lieder may refer to:Sechs Lieder, Op. 59 (Mendelssohn) Sechs Lieder, Op. 4, a set of six Lieder for medium voice and piano by Max Reger Sechs Lieder, Op. 35, a set of six Lieder for medium voice and piano by Max Reger Sechs Lieder, Op. 68 (Strauss) Sechs Leider, Op. 3, a composition by Arnold Schoenberg