1788 into his catalogue are: "Difficile lectu mihi Mars" K. 559, and "O du eselhafter Peierl" K. 560a; other canons which also use a similarly robust language are "Leck mich im Arsch" K. 231, and "Leck mir den Arsch fein recht schön sauber" K. 233. Mozart and scatology References External links "Bona nox! bist a rechta Ochs", score (for unknown reasons in G major) at the Choral Public Domain Library (ChoralWiki) Animated lyrics (expurgated) at the Scratch Project of the Massachusetts Institute of Technology Canons by Wolfgang Amadeus Mozart 1788 compositions Off-color humor Compositions in A major