The Second Bi-Annual Masters of Musical Whistling, an international festival and competition, will take place at Barnsdall Art Park – Gallery Theater in Hollywood on Sept. 8-9.

Masters of Musical Whistling festivities will start at 11:30 a.m. on Friday, Sept. 8, with a master class featuring world champion whistlers Geert Chatrou and Carole Anne Kaufman, who will help fan of musical whistling from beginner to advanced improve their skills.

The event will continue with a meet-and-greet at 2:30 p.m. and the International Concert of the Masters at 7:30 p.m. when the musical whistlers demonstrate their unique talents.

On Saturday, Sept. 9, whistlers from around the world, including Japan, Norway, Spain, Israel and Netherlands, will compete in several categories for the title of the “World Champion.”

The pre-recorded accompaniment division of the contest featuring popular and classical compositions will start at 2 p.m. Saturday.

The second concert competition, which begins at 6 p.m., features live band accompaniment and self-accompaniment. Chatrou, considered one of the best musical whistler alive, will judge the performances of the contestants.

Kaufman, a two-time world champion, started the Masters of Musical Whistling in 2015 to promote the art of whistling and bring it back to the mainstream.

For more information and tickets, visit mastersofwhistling.com or facebook.com/mastersofwhistling.