Are there cultures where music is used only by one specific group and/or in one specific setting?

Sorry about the clumsy title, I’ll try to explain myself a li’l bit better:

In the West, music is used in weddings, funerals, churches, discotheques, waitings rooms and well, pretty much everywhere else. You’ve got your military marches and your cheesy bubblegum pop and your bombastic Wagnerian operas and your probably-really-depressing-yet-somehow-mysteriously-enticing Finnish tangos. Music is pretty much all over the place, is what I’m saying – it’s played or heard by a wide range of people in a wide range of settings, and deals with an extremely wide range of emotions.

Is the same true all over the world?

Or are there cultures where music is only played by one specific group – say, where only children sing, or only madmen, or only soldiers, or only widows?

Are there cultures where music is only and exclusively used in one setting and one setting only – be it religious service or neighborhood barbecues or wedding-night love-making?

Or, perhaps, cultures where all music deals with the same emotion, mood or state-of-mind – so that all the indigenous songs are only and exclusively joyful, or melancholy, warlike, devotional, romantic?