Alberti-Bass

The Alberti bass is a special type of musical accompaniment which is used mainly in classical music. Named the Alberti bass is named after its inventor Domenico Alberti.

It is an arpeggio, a broken kind of accompaniment, in which the individual notes of the chords are not simultaneously, but in succession in the order " deepest, highest, middle, highest tone " sounded ( The order is not fixed, so it can vary arbitrarily ). This pattern is then repeated over and over repeatedly. A well-known example of an Alberti bass is the beginning of Wolfgang Amadeus Mozart's Piano Sonata in C major, K. 545:

In general, the Alberti basses are used in keyboard works, and then played with the left hand, but they are also found in compositions for other instruments, such as in Bela Bartok String Quartet No. 5 of 1934.

• Arrangement and Instrumentation