Vols. 11 & 12 is the sixth compilation album by the desert rock supergroup Desert Sessions, a side project of Queens of the Stone Age frontman Josh Homme. It is a compilation of the group's eleventh release, titled Arrivederci Despair and their twelfth release, titled Tightwads & Nitwits & Critics & Heels. It was released in October 2019, the group's first release after a 16-year hiatus. The album features contributions by various rock artists including Billy Gibbons of ZZ Top, Stella Mozgawa of Warpaint, Jake Shears of Scissor Sisters, Mike Kerr of Royal Blood, Carla Azar of Autolux, Les Claypool of Primus, Matt Sweeney, Matt Berry, and Libby Grace.