Twenty-four years is a long time. That’s how long it had been since Pink Floyd shared a stage as a quartet before July 2, 2005, when David Gilmour, Roger Waters, Nick Mason, and Richard Wright walked out together at London’s Live 8 concert and made history one more time. Four songs, “Speak to Me/Breathe,” “Money,” “Wish You Were Here,” and “Comfortably Numb,” delivered with the kind of weight that only comes from musicians who built something together decades earlier. It was one of Richard Wright’s final major performances before his passing in 2008, and knowing that now makes the whole thing land even harder.