MAC DOES BILLY AT EL CORTEZ

Mac DeMarco, whose new album "This Old Dog" was released on Friday and is about to head out on tour, performed a set in a Brooklyn studio for Pitchfork's Facebook on Monday afternoon. You can watch that whole thing below.

Later that night he showed up at the karaoke afterparty for the Slowdive show at Brooklyn Steel, at which he did Billy Joel's "Just the Way You Are." Video of that, shot by Dana Distortion, can be watched above.

MAC IN A BROOKLYN STUDIO

Slowdive play the the same Brooklyn studio for Pitchfork's Facebook on Tuesday afternoon before their 2nd show at Brooklyn Steel on Tuesday night. Stay tuned for more about those shows, but meanwhile here's one Instagram: