A musical work intended to be sung by the human voice with distinct and fixed pitches and patterns using sound and silence and a variety of forms that often include the repetition of sections.
A linear succession of musical tones that the listener perceives as a single entity; a combination of pitch and rhythm, also known as a tune, voice, or line.
The basic unit of musical time -- the pulse -- of the mensural level. The beat is often defined as the rhythm listeners would tap their toes to when listening to a piece of music.
The use of simultaneous pitches or chords. Harmony is often said to refer to the "vertical" aspect of music, as distinguished from melodic line, or the "horizontal" aspect.
The low-pitched instrumental part or line played by a rhythm section instrument such as the electric bass, double bass, cello, tuba, or keyboard in many forms of popular and other music.