I was always more of a "Blur" fan than an "Oasis" one, but to be honest I'd forgotten completely why they had split up. This fly-on-the-wall documentary tries to fill in some of the gaps as it reunites the four members of the band who are going to record their first new album in decades and do a little mini-tour of some "intimate" venues before a couple of gigs in front of eighty-odd thousand peop…