Cornell's "I'm On Hold" follows some of the industry standards, particularly around frequencies and compression, which is one of the reasons he wrote it with a country-ish melody, wanting something simple but catchy, with only a single instrument and vocals. But in other ways, "I'm On Hold" totally upends the genre by breaking the cardinal rule — that hold music shouldn't call attention to itself.
The idea of creating a custom on-hold message may sound daunting, but advancements in technology have made it a lot easier in the last few years. In its simplest form, all you need is an audio file. Before you start, check with your IT support team or phone system vendor to see if there are any special requirements you need to be aware of.

Do you need benefits and eligibility information faxed or emailed? Just call this number to access our automated Voice Portal. Dental offices can receive patient information via fax or email. Members may receive eligibility, benefits, and claims information via email, as well as lists of participating dentists in their area. Please make sure we have your current fax and email information before submitting your request. To verify, visit our website at w w w dot delta dental n j dot com. Log in to Benefits Connection. Click “Profile” under “Other Tools.”
VoIP providers also use other audio technologies such as silence suppression, background noise removal, echo cancellation, etc, which also affect the way voice sounds, and on hold music too.