If it is a genre, hold music, it's fair to say, is a troubled one with few hits. It's not really meant to be loved or even listened to — it's meant to communicate something specific: Don't hang up. (Cornell makes this plea specifically at the end of his song.) Silence is believed to be a death knell for phone calls — people will simply think the line is dead and hang up. This is true even on non-hold calls; it's why phone companies transmit something called a "comfort tone" over phone lines, a barely audible synthetic noise that signals a connection is still there.
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Custom on-hold messages with background music, can be integrated into most telephone systems. Take advantage of your callers' waiting time to play important messages or broadcast your pre-made radio commercials. Companies spend huge amounts of money on advertising to get people's attention for just few seconds. So why not use this precious waiting time while you have the full attention of your callers, for free? It's the perfect opportunity to talk about your new products, mention promotions or remind people of what makes you stand out. Showcase yourself!