A musical instrument is an object constructed or used for the purpose of making music. In principle, anything that produces sound can serve as a musical instrument. The history of musical instruments dates back to the beginnings of human culture. Musical instruments developed independently in many populated regions of the world. However, contact among civilizations resulted in the rapid spread and adaptation of most instruments in places far from their origin. There are many different methods of classifying musical instruments. All methods examine some combination of the physical properties of the instrument, how music is performed on the instrument, the range of the instrument, and the instrument's place in an orchestra or other ensemble. Amongst the most important classes of instruments there are Keyboards, like Pianos, Strings as Violins and Guitars, Brass like Trumpets and Percussions such as Drum sets.