Tobias Jesso Jr. and his live band Duk have been breaking out a whole bunch of quick covers at their recent shows. One of the songs that they’ve been doing is HAIM’s “Forever,” and at his show at LA’s Fonda Theater last night, Jesso spotted the HAIM sisters themselves in the audience and invited them up to perform it with him. He also danced around with them onstage, and because it was the day before Halloween, he was dressed as a sasquatch. He played two more covers earlier in the night, OutKast’s “Hey Ya” and the Ghostbusters theme song, and you can watch all three performances below. Thanks to Bryce Segall for the tip!