Brian Wilson adds background vocals to the cut "Any Emotions" from Mini Mansions.

The collab comes from the band's upcoming LP, The Great Pretenders, and started as a bit of wishful thinking, Mansions' bassist Zach Dawes told Rolling Stone.

"I went straight to Vox Studios from that session where the boys were doing vocals for 'Any Emotions,'" he recalled.

"As they got into harmonies, Brian's name came up kind of as a pie-in-the-sky idea.

I followed up with him and sent him a rough cut of the song. Then that rare moment occurred where the idealized version of something becomes a reality."

Mini Mansions also shot a video for the track which stars actor Colin Hanks.

"He had caught our set opening for the Arctic Monkeys last year and everybody agreed he would be perfect," Dawes noted.