Musical instruments are devices that are used to generate music. Musical instruments are generally controlled by the player or the musician to produce the desired sound effects.

Musical instruments are as old as music, and there are still some traditional instruments that date back to centuries before. Each musical instrument has its own melody, pitch, rhythm, timbre, loudness, and duration, as well as the notes and chords.

There are many kinds of musical instruments. The main categories are: chordophones (strings), aerophones (woodwinds and brasses), idiophones (percussion), and membranophones (drums). Stringed instruments produce a sound when a string is plucked or strummed. The sound depends on the mass of the string, length of the vibrating portion of the string, its tension, and the point at which the string is plucked or strummed. It also depends on the kind of resonating cavity in the instrument. Viola, violin, cello, guitar, mandolin, fiddle, harp, lute, banjo, etc, are some of the string instruments.

Woodwinds and brasses generate music when air is made to enter and vibrate within the instrument. The kind of music depends on the shape of the instrument, the length of the column of air, the method of tone production and the construction of the instrument. Flute, piccolo, clarinet, oboe, horn, mouth organ, saxophone, and bassoon are some of the winds instruments, while the French horn, tuba, trumpet, and trombone are brass instruments. Percussion instruments, on the other hand, are those that produce sounds when struck. The shape of the resonating cavity and the size of the instrument determine the sound created. Some percussion musical instruments include the cymbals, the snare drum, bells, gong chime, xylophone, and the timpani. Drums include the frame drum, the tambourine, the goblet drums, the barrel drum, and the friction drum.

Other kinds of musical instruments are the keyboards and electronic instruments. These include the piano, organ, harpsichord, and the Glockenspiel. Each of these musical instruments has sub-categories within them.

Musical instruments can also be categorized on the basis of their playing levels. Some are suitable for all kinds of players while some are for novices. Expert players have their own preferences for musical instruments.

There are many professional dealers of musical instruments who would be able to provide all types information about each instrument in particular. There are also online stores for musical instruments.