It is a stretch too far to think that my girl will pick anything up at this age.
As far as I have observed, she recognises the Arabic numerals and, for example, can correctly name the number “3” in both English and Mandarin.
While she does not understand their applications, it is clear that she has Arabic numerals (1,2,3,4,5,6,7,8,9,10) and numbers written in Mandarin (一，二，三，四，五，六，七，八，九，十) memorised, through cards and television.
If my daughter can recognise numbers and alphabets, she ought to be able to recognise music notes and associate them with the correct keys, i.e. A,B,C,D,E,F and G.
Her limitation is then likely to be how fine she can identify the number of lines and spaces in the stave on which I draw the note heads. Perhaps huge drawings will assist her in distinguishing between the notes as the lines and spaces are made more clearly to her.
It will be interesting to watch her looking at the alphabet C and read C, all while looking at the C note and read C too. She is after all looking at “3” and reading it as both “three” and “三”.