Editing Musical instrument classification (section)

====Classification by function====
Instruments can be categorized according to typical use, such as [[signal instrument]]s, a category that may include instruments in different Hornbostel–Sachs categories such as [[trumpet]]s, [[drum]]s, and [[gong]]s. An example based on this criterion is Bonanni (e.g., festive, military, and religious).<ref name="Kartomi1990" /> He separately classified them according to geography and era.

Instruments can be classified according to the role they play in the ensemble. For example, the [[horn section]] in popular music typically includes both [[brass instrument]]s and [[woodwind instrument]]s. The symphony orchestra typically has the strings in the front, the woodwinds in the middle, and the basses, brass, and percussion in the back.