About 6 years ago, web design removed all the auto playing media and auto playing sounds on page. However, now they are back in design as they look great with animations.
Good Part About Sounds
Music can make a person feel in the beat of the moment. This is great for advertising and increasing trust.
Bad Part About Sounds
Auto playing music may interfere with some surroundings which may cause web visitors to exit out of the page.
Use sounds only for motion events and leave the play & pause button as an option for web visitors.