High Quality Content by WIKIPEDIA articles! In musical terminology, tempo (Italian for time, plural: tempi) is the speed or pace of a given piece. It is a crucial element of composition, as it can affect the mood and difficulty of a piece. The tempo of a piece will typically be written at the start of a piece of music, and in modern music is usually indicated in beats per minute (BPM). This means that a particular note value (for example, a quarter note or crotchet) is specified as the beat, and the marking indicates that a certain number of these beats must be played per minute. The greater the tempo, the larger the number of beats that must be played in a minute is, and, therefore, the faster a piece must be played. Mathematical tempo markings of this kind became increasingly popular during the first half of the 19th century, after the metronome had been invented by Johann Nepomuk Malzel, although early metronomes were somewhat inconsistent.

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