Keep it Brief. Time is money in business, so if your voicemail is long, chances are the caller will simply disengage before the cue to leave a message even sounds. Keep your voicemail short. The most should be around 30 seconds, and even that’s pressing it. We’ve grown into a country where our attention span can last only about 10 seconds in some cases, so keep it short, brief and to the point. Persuade and Engage the Caller. If someone calls your business, they already have an intention. It’s the quality of your voicemail that plays a factor if they consider you a company they’d like to deal with. This is your chance to motivate someone to engage in a meaningful conversation with you. If your voicemail is shoddy, chances are they’ll hang up, or lose motivation to continue the call. In other words, your voice mail must engage and entice someone to the point that they care enough to leave you a message.
If I’m your best friend, that’s not a problem. But otherwise, I have no idea if I’m leaving a message for the right person or not. Was that his voice? I couldn’t tell. It kinda sounded like Micheal Cera. Did I accidentally just call Michael Cera’s phone? “Hey if this is Alex, it’s Bryan Allain…call me back. And if this is Michael Cera, loved you in Year One. You may also call me back.”

Are you creating a voicemail greeting for your entire company or team? These business voicemail greetings will do the trick.
Made famous by George Costanza as you can see the clip here, the answering machine song may seem like a good idea. It's out of the box, unexpected, and definitely a novelty, but unless you're in the music business, it's probably not a good idea. You'll definitely irritate your mother (or anyone else important who calls you frequently) and you won't make a good first impression with your message.