Columbia Music Supplement

Hello! I will be submitting a music supplement for Columbia, and I would like to know how to answer this question (For those submitting musical recordings, please indicate the time range(s) of your recording that you wish to highlight for our review.).

Should it be like (0:00 - 5:00)?

I will be submitting a 15-minute supplement; is it possible to request that the entire supplement be listened to? If not, what would be an appropriate length to cut the 15-minute supplement to (I am applying as a music major, so I would really like to display my abilities with supplements)?

As I remember, my kid cued three minutes in a similar situation. Five would be okay but I would call admissions and ask. This is not a conservatory application. I would not expect them to listen to 15 minutes, no. They are requesting this for a reason.

Are you also submitting a music resume and music letter(s) of recommendation?