A tour operator that specialised in music tours has ceased trading.
The CAA said Melody Music Company, based in Cardiff, held an ATOL up till 31 March.
Bookings and payments made after 30 April 2021 are not ATOL protected, it said.
It added that it is collating information from the company and will update its website as soon as possible.
Run by MD Mark Burrows, Melody Music specialised in choir tours and concert promotions, including gala events at venues including New York’s prestigious Carnegie Hall and the Sydney Opera House.