Lady Gaga cancels concert as she battles respiratory infection Pop star Lady Gaga has cancelled a concert in Montreal, Canada after being struck down with a respiratory infection and being "strongly advised" not to perform by her doctor. 7 April 2026 Lady Gaga has cancelled a concert in Montreal, Canada after being struck down with a respiratory infection. Lady Gaga has cancelled a gig on her tour The 40-year-old pop star had been due to play her third show at the Bell Centre in Montreal on Monday (06.04.