It's synchronised singing that's grown with thousands of members across the country - all of them amateurs who still have their day jobs.
Rock Choir, started by a singing teacher from Surrey, have also sealed a four album record deal and celebrated the launch of their debut release with a mass get together at the Hammersmith Apollo.
Now pre-online sales indicate they could keep the likes of Eminem and Kylie from the number one chart spot, as Brenda Emmanus reports.
Bookmark with:
What are these?
E-mail this to a friend