This might be VERY dated, since I'm an oldie now, but all the sororities on our campus used to sing "We Are Family" by Sister Sledge and it held a lot of meaning to us. Of course, we'd get into competitions with other sororities by changing the words slightly to "We are AGD" or "We are Sigma Three" or "We are AZD" and trying to outscream each other with that line... those were fun times
Dee