A singer is a person who uses their voice to produce music, typically by singing lyrics or melodies. Singers can perform in a variety of styles, including pop, rock, classical, and jazz. Some singers are also songwriters, who write the lyrics and music to their own songs. The physical act of singing occurs as air passes through the larynx, throat, and mouth, and it’s interesting to note that vocal resonation in singing involves seven areas of the human body: chest, tracheal tree, larynx, pharynx, oral cavity, nasal cavity, and the sinuses. The history of singing goes back to the earliest recordings of mankind and songs are believed to have been used even before the development of modern languages. In western culture, singers were often restricted to only singing in churches until the fourteenth century.