Last month, Lucius, the duo of Jess Wolfe and Holly Laessig, released Second Nature, their first album in six years. Lucius took a long break in between albums in part because Wolfe and Laessig were so busy singing with other acts, like the War On Drugs and Harry Styles. They also spent much of 2017 and 2018 on tour with former Pink Floyd leader Roger Waters. Last night, when Lucius played New York’s Beacon Theatre, Roger Waters once again sang with the duo.