The following tips are from the Canadian Online Disc Jockey Association

"Unless you have seen a Disc Jockey at a function that has impressed you, finding the right DJ for your wedding can be difficult. It’s not always the “best price” that does the job properly. Being an intangible product, it’s not like hiring a florist, cake maker, hall decorator or photographer. You can view the quality of their work in advance, and it will either be what you want or you can continue to look at other services.

What to look for in a DJ and some Tips & Advice

Experience is the number one thing you are looking for in a DJ. Ask your disc jockey if you can see his or her music lists. Does this DJ use professional equipment? Do they have back-up equipment and staff available in the event of a problem or failure at the last minute? What experience does this person have and do they know the proper etiquette and procedure for your type of wedding. Do they take music requests from your guests? Can they act as a Master of Ceremonies during the party portion of the function? Is this DJ able to provide references and if there are many DJs on staff at this service, can you meet your particular DJ in advance? Chemistry between you and your DJ is very important from the very beginning. If you are not happy with what you see in advance, you will not be happy with what you get. Do they dress appropriately for the occasion? Do they drink alcohol while on the job, and nowadays even do they smoke cigarettes on the job? Professional disc jockeys always provide you with a written agreement for their services. If they request a deposit for services, the deposit generally should not exceed one half of the service fee. One third of the fee is a common deposit with the balance due on the date of the function."