P.P.
Will you please be so kind as to lend the sonata in F for pianoforte with horn obbligato [Opus 17] just for today to the Baroness Ertmann who wants to play it. I will send it back to you at once tomorrow morning – I hope that His Imperial Highness is well and will not object to doing this kindness to the Baroness E[rtmann] – Since paying my respects to His Imperial Highness I have again been very unwell. But I will put in an appearance tomorrow –
Your most devoted
Ludwig van Beethoven