Thanks to Owlmother via Danya.
The Helsinki Complaints Choir
a choral work written by Finnish artists Tellervo Kalleinen and Oliver Kochta-Kalleinen.
The Complaints Choir invites people to complain as much as they want and to sing their complaints out loud together with fellow complainers. The first choir was organised in Birmingham followed by the Complaints Choir of Helsinki and Hamburg. The lyrics were written by the Choir, Music by Mike Hurley. Project by Tellervo Kalleinen and Oliver Kochta-Kalleinen. You can see the Birmingham choir here, but embedding is disabled. It's also got a cute little rap in the middle.