Musical instruments can be divided into broad categories based on the means by which sound is produced. Wind instruments, such as flutes and trumpets, produce sound by means of the player's breath. Percussion instruments, such as drums and gongs, produce sound when a portion of the instrument is struck. Stringed instruments, like guitars and violins, produce sound when the instrument's strings are manipulated. As the name implies, keyboard instruments, such as pianos and organs, produce sound when the player depresses the keys of a keyboard. Electronic instruments (e.g., synthesizers) produce sound electronically when the player manipulates the instrument's controls.
These basic divisions are helpful for musical instrument buyers to keep in mind when they shop online, at music stores, or through dealers. Many sellers of musical instruments specialize in a particular kind of instrument, such as electronic instruments, or stringed instruments. Another way to categorize musical instruments is by their intended purpose or use.
Prospective buyers of musical instruments can narrow their search for an appropriate seller by considering whether the musical instrument is intended to be a collector's item, a student's instrument, an instrument for professional use, or one intended primarily for personal enjoyment. Collectible items are typically found through dealers of vintage musical instruments, whereas those who need student instruments may want to concentrate on sellers of used musical instruments. Some sellers specialize in instruments for school band use, others in high-end pro equipment. Finally, novice buyers of musical instruments should not hesitate to seek out the advice of experienced musicians, music teachers, and the sellers themselves. Finding a used musical instrument is often the least expensive way to furnish students and beginners with functional instruments they can grow with, before making a major investment.