An electronic keyboard instrument comprises a storage device that stores automatic performance data including a first event for generating a musical tone and first timing data that defines a reproduction timing of the first event, a key-driving data generator that generates key-driving data including a second event corresponding to the first event included in the automatic performance data and second timing data that defines a reproduction timing of the second event and precedes the first timing data for a predetermined time, a keyboard that has a plurality of keys, a key driver that drives each of the plurality of keys in accordance with the key-driving data, a reproduction device that reproduces the automatic performance data and the key-driving data in parallel. The key-driving data generator generates the key-driving data before the reproduction device starts the reproduction. A reproduction process can be simplified even if keys are driven with the reproduction.