These are existing categories by which one may be recommended. You are free to create your own categories, which may be done on your own matrix page. They should help describe what you do, and perhaps where you do it (where you live).

Within the category "buttons" below you will find people within those categories. Sometimes there will be differences in the manner of describing what are essentially the same categories: for example there will be people in Austin, and perhaps Texas; and others in Austin, Texas.

Some categories are vastly more frequently used than others: Jazz, and New York City and Brazil for example. Others may be obscure (to most people) instruments, places, musical styles, etc.