2 Recommendation letters from core classes

<p>I was looking over the application requirements for some of my schools that I'm applying to, like Barnard, and it requires 2 letters from 2 teachers of core classes. I have one letter from a Biology teacher, but my other letter is from my music teacher. I was applying to some schools as a music major, so my counselor told me that it would count as a core class. Is this true? Will colleges really care? </p>