saxophone
A musical instrument that is popular in jazz, classical, and funk music. Comes in four popular sizes (listed from smallest to largest): soprano, alto, tenor, and baritone. (Smaller and larger variations than the soprano and baritone exist, but they are very rarely used.)
Alto: Most commonly used and often in small jazz groups as well as large ensembles. Most distinct feature is that the neck is straight where the mouthpiece is attached. Convenient in size for generally all player heights, standing or sitting.
Tenor: Slightly larger with the physical distinction being the curved neck. Second most common and can be just as essential as the alto.
Baritone: Largest and with a deep bass-like sound, the neck has a complete loop. The size and the weight is considerably harder to maneuver than the rest. They are less common than the prior two, but can be still seen in large wind ensembles and medium to large jazz groups to provide bass depth.
Soprano: The look and posture it is held is almost exactly like a clarinet. Mostly used as a solo instrument in classical or orchestral environments, or in a saxophone quartet.