However, if there is no other option but to place your customers on hold (perhaps during a busy season), you need to make the experience as pleasant as possible.
We put together some resources for a mix of both free-to-use and royalty-free hold music:

Telephone systems have evolved dramatically over the past decade. Whether you’re using a traditional phone system or an advanced VoIP system, our digital production studio can produce your recordings in a variety of compatible formats. We produce high-quality catchy on hold messages that give your business a polished and professional sound, at just a fraction of the cost of what our competitors charge. Why you can’t afford NOT to have an On Hold Message Recent research shows that promoting your business’ services, or educating your customers through an on hold message not only improves the customer experience – but increases the likelihood of a prospect becoming a customer. We’ve been helping businesses for years to improve their telephonic marketing through well crafted on hold messages.
“Evolved Sound’s phone on hold solutions will exclude your business from paying any licence fees to any regulatory or governing body, resulting in significant yearly savings, particularly when multiple lines exist.” Finished telephone on hold messages are mixed with complimentary music and finalised for best playback quality to callers.