On-hold messaging is also great time to encourage consumers to spend. For example, you can offer customers who spend more than $99 free shipping, customers who order 3 items a 4th item free, etc. Think “upsell” with your ads on hold – you’ve got the customer on the line patiently waiting to (hopefully) spend money.
If multiple files are uploaded, they are played in the order that they are listed on the Music On Hold page. If there is only one file, it is played repeatedly.

One of the most valuable benefits of a Message On Hold program is its ability to help your customer service representatives. As a starting point for your Message On Hold, consider adding frequently asked questions to your on hold script. Ask your customer service reps what questions they hear again, and again, and again, they put those answers on hold. This way, you might answer questions before even talking to a customer.
So what can we do to avoid inflicting further musical misery on our own customers while they’re patiently sitting on hold? We could just go back to playing a ringing sound, or an intermittent beep just to let people know they’re still connected, but that would be awfully dull. The best compromise is relatively simple electronic music that doesn't have too much going on as the ideal choice for hold music as it requires far less refined sound quality to get a decent rendition down a telephone connection.