Double major in music and non-related or combined BA/MM program

<p>My child is interested in either a double major in music performance and a hard science or a combined program which awards a BA and MM in 5 years like at Columbia with Julliard, Harvard with the New England Conservatory, or Yale. When would she need to audition for the MM? Before arriving? After the freshman or junior year? Has anyone done this? How hard is it do do and fulfill the distribution requirements?</p>