Patent ID: 7985914

Claim:
An automatic player for playing a part of a piece of music on an acoustic musical instrument, comprising: a sound recognizer analyzing at least pitches of external sound produced by at least one human singer outside of said acoustic musical instrument, determining intended pitches on the basis of said pitches of said external sound, and producing pieces of music data expressing at least pitches of internal sound related to said intended pitches of said external sound and pieces of additional music data expressing at least pitches of said internal sound to be produced together with said internal sound expressed by said pieces of music data, pieces of classification data selectively expressing said pieces of music data and said pieces of additional music data, said pieces of classification data being added to a part of each of said pieces of music data and a part of each of said pieces of additional music data for making it possible to discriminate said each of said pieces of music data from said each of said pieces of additional music data through a difference between a bit string expressing said pieces of music data and another bit string expressing said pieces of additional music data; plural actuators associated with manipulators of said acoustic musical instrument, and responsive to driving signals so as independently to drive the associated manipulators for producing said internal sound at given pitches without any action of a human player; and a controller connected to said sound recognizer and said plural actuators, supplying said driving signals to the actuators associated with the manipulators to be driven for producing said internal sound at said pitches expressed by said pieces of music data, checking said pieces of classification data to see whether the bit string of said pieces of classification data expresses either music data or additional music data and changing timing to supply said driving signal for producing said internal sound at said pitches expressed by said pieces of additional music data depending upon a result of the check.