Sigfrid Karg-Elert (November 21, 1877 – April 9, 1933) was a German composer in the early twentieth century, best known for his compositions for organ and harmonium.Karg-Elert regarded himself as an outsider. Notable influences in his work include composers Johann Sebastian Bach (he often used the BACH motif in Bach's honour), Edvard Grieg, Claude Debussy, Max Reger, Alexander Scriabin, and early Arnold Schoenberg. In general terms, his musical style can be characterised as being late-romantic with impressionistic and expressionistic tendencies. His profound knowledge of music theory allowed him to stretch the limits of traditional harmony without losing tonal coherence.