From the top of my head, many Joshua Tree shows had Stand By Me (Ben E. King) and All You Need Is Love (The Beatles) played before the band took the stage. Check if those songs are what you're looking for! Anyway, I will check it when I get home, it's a great reason to take the dust off the excellent Syracuse proshot
hey man, you are right!!!!! its all you need is love!!!! thanks, actually i remember the chorus,all you need is love, but not love is all you need. the show strts with this: love is all you need love is all you need, "yahoooo"" iheeeeeeeey""oh yeahhhhhh"
identify it. 
iheeeeeeeey""oh yeahhhhhh"