People don’t like going on hold, but you knew that. Funny, considering the early telephone users had to wait to be connected anyway, but now we expect an immediate connection. Think back a couple of decades to the dial-up era. You probably remember the time it took for AOL to connect—and the sounds that went with it. Now, a web page that takes more than a few seconds to load is inexcusable.
It's a place most of us have been before: Knowing that you have no option if you wish to get the help you need, you reply, “Sure, I’ll hold,” and politely wait. If you have never been through what comes next before, you are lucky. If I am being completely honest, I am slightly envious.

A comedic on hold message script isn’t just some novelty you can invest in because you feel like it. It’s a way to distinguish your company and establish your brand, and it can help make your customers more eager to do business with you. It’s icing on the cake of your company; without it, it’s not really a cake at all.
For those still using analogue or digital phone systems, voice on ISDN circuits has a bandwidth of around 4000Hz. The audio from an analogue phone is sampled at 8000Hz, and because of the nyquist theorem, must be low-pass filtered to 4000Hz. So any frequencies in the audio beyond 4000Hz are lost. Interestingly, the human ear and mind are good at recognising human speech, so this is considered "toll-quality" voice, i.e. good enough to pay for. This is the reason why certain vocalised letters are difficult or impossible to tell apart on the phone. For example, the differences between B, P, T, C, etc. are almost entirely above 4000Hz.