[adpiucf]

Don't worry about potentially wasting anyone's time. These alumnae sign on for this and love helping out PNM's, regardless of whether they pledge. Get all your ducks in a row and if your daughter still wants to proceed, then get your recs timely and have a blast!

She will need new recs for each recruitment: formal or COB. Recruitment records are destroyed after each recruitment period, so if she does formal and later does COB, you need new recs. And vice versa.

As others suggested, I'd call the school Panhellenic/Office of Greek Life and ask them if the band practice is an excused absence and make sure to get it cleared in writing and get confirmation of the excused absence in writing. My guess is that you will be fine. The sororities love members involve with various student activities like band, theatre, athletics, etc., and recognize there will be scheduling conflicts. Make sure to talk with a live person, preferably the director and not a student working in the office, to get absolute confirmation. Then at recruitment, have your daughter mention this to her recruitment counselor and re-confirm.