Roger Waters joined his fellow Pink Floyd member, Nick Mason, on stage Thursday night (April 18) in New York for a mini-reunion of sorts. Mason is in the midst of a North American tour with his band Saucerful of Secrets.

Fifteen songs into Mason’s set at the Beacon Theatre, Waters came on stage to perform the early Floyd song “Set the Controls For the Heart of the Sun,” which Waters wrote for the band’s 1968 album, A Saucerful of Secrets.

Mason’s current band first performed its live show of early Pink Floyd material to U.K. and European audiences in 2018. The current 28-date North American tour, originally announced on September 25, kicked off March 12 in Vancouver, British Columbia, and concluded April 22 in Washington, D.C.

Mason has added more European dates for summer 2019.

This tour marks Pink Floyd co-founder and drummer Nick Mason’s first performances in North America since Pink Floyd’s July 18, 1994, concert at Giants Stadium in East Rutherford, N.J., as part of the Division Bell Tour.