Yale Music Supplement LORs

[skieurope]

They HIGHLY recommend ONLY two LoRs.

3; 2 teacher and one counselor.
[url=http://admissions.yale.edu/may-i-submit-supplementary-letters-recommendation]Here[/url is, in part, what they say about additional recs (emphasis mine):

If you feel the need to submit extra information, you may ask one additional recommender to write on your behalf. Please do not solicit this additional letter unless you feel it will add substantially to your application. The writer should know you well personally or have mentored you closely in some capacity. For example, if you have engaged in advanced scientific research, you should consider asking your research mentor to write a letter of recommendation for you.