Abstract: In a performance operator group, a partial region including at least one first performance operator and at least one second performance operator is set as a first key region. An allocator allocates musical sound data to the first key region. An operation detector detects an operation using each of the plurality of first and second performance operators of the performance operator group. A reproduction controller carries out first control relating to a reproduction method of the allocated musical sound data in response to detection of an operation using one of the first and second performance operators in the first key region, and carries out second control relating to the reproduction method of the allocated musical sound data and being different from the first control in response to detection of an operation using another one of the first and second performance operators in the first key region.

Abstract: A performance assistance apparatus includes a sound generator circuit and a processor. In response to detection of a sound generation timing, the processor determines whether or not the sound indicated by the user performance information matches the sound designated by the model performance information in association with the sound generation timing. Based on determination that the sound indicated by the user performance information does not match the sound designated by the model performance information, the processor causes the sound generator to audibly generate an assist sound relating to the sound designated by the model performance information.

Abstract: In a performance operator group, a partial region including at least one first performance operator and at least one second performance operator is set as a first key region. An allocator allocates musical sound data to the first key region. An operation detector detects an operation using each of the plurality of first and second performance operators of the performance operator group. A reproduction controller carries out first control relating to a reproduction method of the allocated musical sound data in response to detection of an operation using one of the first and second performance operators in the first key region, and carries out second control relating to the reproduction method of the allocated musical sound data and being different from the first control in response to detection of an operation using another one of the first and second performance operators in the first key region.

Abstract: A performance assistance apparatus includes a sound generator circuit and a processor. In response to detection of a sound generation timing, the processor determines whether or not the sound indicated by the user performance information matches the sound designated by the model performance information in association with the sound generation timing. Based on determination that the sound indicated by the user performance information does not match the sound designated by the model performance information, the processor causes the sound generator to audibly generate an assist sound relating to the sound designated by the model performance information.