A common feature of the modern office is the ringtone. At random moments throughout the day, the air is filled with intros. Sometimes it's the intro of a shite song, which is annoying, and sometimes it's the intro of a dead good song, in which case having it cut off after ten seconds is annoying. And sometimes, of course, it's some bloody bleeping monophonic doorbell version — the less said about them, the better.
Since the principle of loud music in the office seems to have been established and accepted, I have an idea. Why not employ an actual guitarist in your office? All the staff hand their phones over to him or her every morning, and the phones get put on silent. The guitarist then spends the day watching the phones. When one rings, he plays the tune for that phone. And you could make requests: "If my mother-in-law calls, could you play Smoke On The Water?" "If my bank ring, could you play Flight Of The Bumblebee extra-fast?" If a song's particularly popular, everyone could request that he continue playing after the relevant person has finished their phone call.
You know, on second thoughts, this would be so much better with a lounge pianist.