Just when you thought you'd seen it all over the last few days when it comes to Prince tributes, along comes Billy Corgan covering "The Cross" from Prince's legendary 1987 album, Sign o' the Times.

During a backstage VIP performance of Smashing Pumpkins' acoustic-electro In Plainsong tour last week, Corgan and touring bandmate Sierra Swan delivered a straightforward and touching take on the late icon's song about spiritual inspiration and salvation.

Fortunately for those of us who were not on the VIP list for that particular event, someone was captured the moment and Swan posted it on Facebook.