This is the amusing moment four stray dogs caused a racket by trying to join in with a brass band playing a national anthem.

The pooches started howling and barking as pupils raised the flag and played instruments in Maha Sarakham, northeastern Thailand on January 14.

Teacher Weerawat Jaipakdee said the dogs had been wandering around the school grounds for more than a year.

He said: "They are professional singers. They start the days by singing the national anthem at the assembly every morning, that is why all students and staff love them."