We had two - there wasn't one song that kept the energy we wanted long enough for all of the attendants, RB, FG, all parents and grandparents PLUS us! So we split it up - ZZTop "Sharp Dressed Man" for the bridal party big group, and then our DJ seamlessly transitioned (he was a wizard I swear) into The Who, "Baba O'Riley" for our entrance. It was kind of like the reception version of closing the church doors or changing the music for the bride's ceremony entrance
We are sticking to one song. My best friend who is also a DJ (not ours) says that the entrance are usually lower in volume so that names can be heard and that most people don't pay too much attention to the song.