Complex sentence: The lineup consisted of Mark Olson, Gary Louris, Marc Perlman, Karen Grotberg, and Tim O'Reagan, and, as Louris says, "Our goal is to make the best Jayhawks album that's ever been done".
Split into simpler sentences: The lineup consisted of Mark Olson, Gary Louris, Marc Perlman, Karen Grotberg, and Tim O'Reagan. Louris said, "Our goal is to make the best Jayhawks album that's ever been done".