Bruno Mars made it “Rain” with some help from Skylar Grey. During his show in Vienna, Austria, the fedora-clad crooner brought the “Invisible” singer out to perform his newest song “It Will Rain” off the Twilight soundtrack. Skylar, who has been opening for Bruno on his European tour, appeared onstage to add her haunting vocals to the dark tune.

“Special Thanks to my girl @SkylarGrey for singing ‘It Will Rain’ with me tonight in Vienna.. X0x0x0 #WhatAVoice,” tweeted Bruno.