Frontman Dan Gillespie-Sells told the Sun newspaper February 8, 2008 that he kept the same musical formula he has always followed to write songs for Join With Us. He revealed: "I just keep playing through stuff until it genuinely makes me smile. I play and play and play until I find something that puts a smile on my face. I am a very upbeat and positive person but deep down I have the same anxieties a lot of people have. I don't express it by wallowing in it. I turn it into something joyful. When I have dark days, I turn to music and it drags me out of it. Writing songs is my therapy. That's why they are so joyful as I can be a miserable bastard when I want to be!"
Bradley House, the Wiltshire stately home of the Duke of Somerset, was the location chosen for recording much of the album.
Walk The Moon vocalist Nicholas Petricca got the idea for "Shut Up and Dance" when he and his girlfriend were taking forever to get drinks at a Los Angeles club bar. Petricca was getting frustrated, so his girlfriend told him to, "Shut up and dance with me!'"