This year's Summer Sonic had its craziest moment on Sunday night when 1980s singer Rick Astley joined the Foo Fighters for the latter's headlining performance.

"Come on you motherf———!" Astley bellowed at the thousands of fans gathered in Chiba's Zozo Marine Stadium, with the U.S. rock outfit laughing hysterically. They then ripped into a mash-up of Nirvana's "Smells Like Teen Spirit" with Astley's hit-turned-meme "Never Gonna Give You Up."