Talk:String Duo No. 1 (Mozart)

Mozart filling in for Michael Haydn? ...
Does one have better sourcing for this? (It should be pointed out that the usual anecdote about the duos- that Colloredo demanded 6 duos by such-and-so date, and that Mozart stepped in to help his friend when he couldn't fulfil on time, etc.- stems not from Mozart's many letters but from two of Michael Haydn's pupils, G. Schinn and Fr. J. Otter (Alfred Einstein - Mozart, His Character, His Work (1962), p.186.) Schissel | Sound the Note! 11:06, 2 June 2014 (UTC)