Last night’s Phish performance will certainly go down as one of their finest, as the band recruited a 9-piece ensemble to back them up on a full album cover of David Bowie’s The Rise And Fall Of Ziggy Stardust And The Spiders From Mars. You can read the full story here, but you could also get the scoop from Dead & Company’s own John Mayer, who was in attendance at last night’s Phish show.

Mayer could be seen riding the rail during the third set, wearing a full unicorn onesie costume in honor of the holy jam band holiday of Halloween. Mayer posted updates on his Snapchat throughout the night, and you can watch that feed in the embed below.

Looks like he had a great night!