Beats per minute

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In musical terminology, tempo (Italian for time, plural: tempi) is the speed or pace of a given piece. Tempo is a crucial element of any musical composition, as it can affect the mood and difficulty of a piece.


Measuring tempo

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 Mälzel, although early metronomes were somewhat inconsistent. Beethoven was the first composer to use the metronome, and in 1817 he published metronomic indications for his (then) eight symphonies. Some of these markings are today contentious, such as those on his "Hammerklavier" Sonata and Ninth Symphony, seeming to many to be almost impossibly fast, as is also the case for many of the works of Schumann.[1]

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