Original sentence: 561, is a canon in A major for four voices a capella by Wolfgang Amadeus Mozart; Mozart entered this work into his catalogue on 2 September 1788 as part of a set of ten canons.A similar phrase occurs in Mozart's letter from 7 July 1770 to his sister.There is a very strong resemblance to a postscript by his mother to one of Wolfgang's letters on 26 September 1777 to his father
Edited sentence: 561, is a canon in A major for four voices a cappella by Wolfgang Amadeus Mozart; Mozart entered this work into his catalogue on  as part of a set of ten canons.A similar phrase occurs in Mozart's letter from  to his sister.There is a very strong resemblance to a postscript by his mother to one of Wolfgang's letters on  to his father