Eccentric US pop star Pink cancelled her gig in Bulgarian capital Sofia on doctors orders, concert organisers Sofia Music Enterprises said on Tuesday.
Pink was initially due to perform at the Akademik stadium on Sunday, but postponed the gig for Tuesday after being diagnosed with a serious respiratory infection.
Although the doctors dealt with the pop singer's fever, her vocal cords did not recover enough for her to sing.
The organisers said they would refund the tickets starting on Friday.
Pink and her management have conveyed their apologies for the cancellation of the show and said they hoped the country would be included in the singer's next European tour.