The star, who has teamed up with the Australian electro duo for an album that reworks his songs from the '70s, will put out 'Good Morning to the Night' as one of five official releases to coincide with the Games.
Pnau's Peter Mayes told Digital Spy: "The [album's] title track is going to be one of the songs for the Olympics. The Muse song is the official track, and we're the next song along with Chemical Brothers and Delphic.
"They're releasing five songs to coincide with the event, which is so exciting! Elton is jazzed about it - he told us the good news in rehearsals earlier [this week]."
Asked if he was excited about this year's Olympics, he said: "It being in London makes it a pretty big deal.
"I remember when it was in Sydney, and it was just a massive cleaning job. I'd never seen the city so manicured in my life! Expect an absence of bums for a few weeks."
John recently admitted that he is looking forward to the album's release, adding: "I've never felt as excited about the finished product as I do about these tracks with Pnau."
> Read Digital Spy's full interview with Pnau
Listen to 'Good Morning to the Night' below: