The bands Collective Soul and Lifehouse — of “The World I Know” and “Hanging by a Moment” fame — will perform Sunday night at Cornell University in Ithaca at 7 p.m. Tickets are $20 for non-Cornell students, and $15 for Cornell kids. The show will take place in Barton Hall, and you can buy tickets at CornellTickets.com. Cornell, which is about 50 miles from BU’s campus in Vestal, is a little more than an hour away.