Bradford Council's Christmas lights switch-on will feature French trapeze masters, Transe Express, performing 'Maudits Sonnants'.
Mythical jesters will parade through the crowd before a chandelier of musicians rise 200 feet above the park - creating an orchestra of harmonised bells and surreal trapeze skills.
There will be a countdown to the switch on followed by a fireworks display, which will be set to Christmas music.
Family festivities will begin around midday with Christmas-themed street theatre and live music at various locations in the city centre.
The main show then begins at 5pm in City Park with St John's Church of England Primary School and Bradford Festival Choral Society singing Christmas carols.