Musical instruments.

... is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening.

... are usually played by striking with the hand, or with one or two sticks with or without padding. A wide variety of sticks are used, including wooden sticks and sticks with soft beaters of felt on the end.

... is a string instrument with four strings tuned in perfect fifths which has become one of the most popular and most used instrument in the world for spontaneous music and formal compositions ranging from classical to folk and finally to popular/rock.

... is an acoustic stringed musical instrument, in which the strings depart with wooden hammers covered with a softer material. It is played using a keyboard, which is a series of keys that perform presses down or strikes with the fingers and thumbs of both hands to leave the hammers to strike the strings.

... is a musical instrument that consists of wooden bars struck by mallets. It consists of a set of tuned keys arranged in the fashion of the keyboard of a piano.

... is a keyboard instrument of one or more pipe divisions or other means for producing tones, each played with its own keyboard, played either with the hands on a keyboard or with the feet using pedals.

... is a fretted musical instrument that usually has six strings. It is typically played with both hands by strumming or plucking the strings with either a guitar pick or the fingers/fingernails of one hand, while simultaneously fretting (pressing the strings against the frets) with the fingers of the other hand. 

... are a family of box-shaped musical instruments. It is played by compressing or expanding the bellows while pressing buttons or keys, causing pallets to open, which allow air to flow across strips of brass or steel, called reeds.

... is a family of woodwind instruments usually made of brass and played with a single-reed mouthpiece.They are categorized as woodwind instruments. The player covers or uncovers the holes by pressing keys.

... is an idiophone type of musical instrument in the percussion family. It is a bar of metal, usually steel. The instrument is usually held by a loop of some form of thread or wire at the top curve.

... are a woodwind instrument in the form of a bag. The most common method of supplying air to the bag is through blowing into a blowpipe or blowstick. 

... is a bowed string instrument of the violin family. Its four strings are usually tuned in perfect fifths.