In the world of mainstream music, everyone loves a good band reunion—especially when the original lead singer returns. More often than not, bands do not end up like Green Day, where the lineup has remained the same for decades. Instead, there are usually changes that occur, but nothing is quite as heartbreaking as when the lead singer departs. The voice is what people associate with a band, and without it, things undoubtedly sound different, even if it's for the best.