Singing makes atheist "church" work

I was interested to read this article in the British newspaper The Guardian about an atheist church service in London. Atheists want community and something to do on a Sunday morning. After experiencing the  service, a couple of curious atheists from High Wycombe told the reporter:

"Some of the things I thought really wouldn't work, like the singing, were really good. Normally I hate singing."
Churches do a lot of what they do "because it works", he notes, "Atheists make a mistake to look at church and throw it all out just because they don't believe in God."

And what did they sing together? "Don't Stop Me Now" by Queen and "Superstition" by Stevie Wonder.