DEAR AND MOST EXCELLENT FELLOW!
              
                     I received my variations 
              yesterday evening. Indeed they had become quite strange to me; and 
              I am delighted, for to me this is a proof that my compositions are 
              not entirely commonplace. But here are still a few mistakes which 
              I must point out to you and which I beg you to have corrected immediately, 
              because they are really very important ones.
              
                     First of all, there is 
              a mistake on the title-page where it is stated 'avec un violon ad 
              libitum'. Since the violin is inseparably connected with the pianoforte 
              part and since it is not possible to play the v[ariations] without 
              the violin, this should be worded 'avec un violon obligate', exactly 
              as I corrected it, moreover, in one copy ! In the twelfth bar of 
              the first variation beginning at the last quaver there is a tie, 
              which should not be there. It is marked with a little asterisk; 
              it is in the bass. In the eleventh and twelfth bars of the 
              third variation three notes in the bass have been omitted. 
              In the eleventh bar these notes are F, a crotchet and a quaver; 
              in the twelfth bar the note is an E and is a crotchet. This too 
              is indicated.
              
                     In the seventh bar of 
              the fourth variation in the treble there are two marks above and 
              below which look almost like trills. But these should be two slurs, 
              as I have indicated.
              
                     In the ninth v[ariation] 
              at the end of the first part the double bar is missing, so that 
              it looks as if the first part should be repeated, though it ought 
              not to be. The four dots are to be removed and the four placed as 
              I have indicated. At the double bar of the second part four dots 
              have to be inserted, as I have indicated.
              
                     In the seventh bar of 
              the eleventh variation four notes in the treble are out of place; 
              and this is a dreadful mistake. I have corrected these notes and 
              written above them what they should be.
              
                     In the third bar of the 
              twelfth variation a note in the bass is out of place. I have put 
              this too in the place where it ought to be. In the fifth and thirty-sixth 
              bars of the coda a slur has been put under the treble notes. That 
              is wrong. It should be merely a stem -- inserted to indicate that 
              the following notes too must be played with the first finger. In 
              the forty-first bar of the coda the note Bb in the bass has a stem 
              below and above. That is wrong. The note should have a stem only 
              below.
              
                     In the eleventh bar of 
              the second v[aration] in the bass instead of a quaver D a crotchet 
              has been put, and instead of a crotchet D a quaver has been put. 
              In the twenty-fifth bar of the eighth variation C appears in the 
              bass instead of Bb. I have corrected these. All this applies to 
              the pianoforte part.
              
                     In the violin part everything 
              is all right, save for the trifling errors which should be noted. 
              In the penultimate bar of the sixth variation a slur over the two 
              quavers has been omitted. In the first bar of the second part of 
              the eleventh variation a dot after the note G has been omitted. 
              In the eighth bar of the ninth variation in the pianoforte part 
              two sixes have been put on these notes
                                                                             
              the 
              lowest of which must be removed. In the pianoforte part in the fourteenth 
              bar of the coda in the treble the tie which should be put after 
              the F# has been omitted.
              
                     In the fifth bar of the 
              fifth variation in the violin part a natural has been left out. 
              This has been marked.
              
                     You are being very much 
              pestered with these trifles. But you yourself will realize that 
              they are serious mistakes. Please hasten to correct them so that 
              they may all be altered together with the title-page. If some copies 
              have already been sold, then Artaria must make a point of recovering 
              those copies and correcting the errors. I am coming into Vienna 
              myself tomorrow or the day after.
              
                     I must close; and in my 
              haste all that I can add is that I am with my best regards your 
              friend
              
                                                                                                                 Ludwig 
              van Beethoven
              
                     The copy on top is the 
              one that has been corrected.