My Bloody Valentine reunited in 2007, and released their third studio album "m b v" in February 2013. The album was composed entirely by Shields and had been in production since the late 1990s, when Shields was rumoured to have been suffering from writer's block and mental illness. Shields has since been featured in several publications' best-of-lists, including "Rolling Stone" 100 Greatest Guitarists and "Spin"s 100 Greatest Guitarists of All Time. Multiple musicians have also cited him as an influence, including Billy Corgan and J Mascis.