The Irish rock band U2 canceled a concert in Berlin after singer Bono lost his voice during the performance.
The band said on its website Saturday that: "Bono was in good shape and great voice prior to the show … but after a few songs he got a complete loss of voice."
U2 said: "We do not know what happened and we take medical advice."
The German news agency dpa reported Sunday that Bono could still perform the song Beautiful day with the help of the audience in the Mercedes-Benz Arena in Berlin and then disappeared behind the stage.
The concert goers were told for the first time that there would be a short break before they would eventually be informed that the show was over and that they had to keep their tickets for a replacement performance.