Musical horns are devices that produce sound through the vibration of air, often used in vehicles or as novelty items. They can play melodies or sound effects, making them popular for celebrations, parades, and events. These horns typically use a compressed air system or electronic components to create music. The design of musical horns can vary widely, from simple hand-held versions to complex systems integrated into cars. Some musical horns are programmed to play specific tunes, while others allow users to select from a range of sounds. They are often associated with festive occasions and can enhance the atmosphere of celebrations.