An electronic music system having a computer which performs a sequencing function by executing music software and a remote controller connected to the computer, the remote controller comprising a plurality of setting operators for specifying a controlled status of a sequencer configured on the computer; and the computer or the remote controller comprising a setting portion which specifies a controlled status brought about by the sequencing function in accordance with an operation of the setting operators, wherein: the computer employs a plurality of different types of tone generators for generating musical tones; the setting operators include: a start operator for instructing start of a series of operations including adding a new track which is a unit to record/reproduce a musical event by use of the sequencer configured on the computer, offering options of available types of tone generators to be used for an added track, and assigning a selected tone generator type to the track; and a tone generator selection operator for selecting any of the different types of tone generators; and the setting portion comprises: an addition portion which newly adds, in response to the instruction made by the start operator, a track; a tone generator offering portion which offers, after the addition of the track, options of available types of tone generators to be used for the added track; and a tone generator assigning portion which assigns, in accordance with the selection made by the tone generator selection operator in a state where the available different types of tone generators have been offered, a selected tone generator type to the track. the computer employs a plurality of different types of tone generators for generating musical tones; the setting operators include: a start operator for instructing start of a series of operations including adding a new track which is a unit to record/reproduce a musical event by use of the sequencer configured on the computer, offering options of available types of tone generators to be used for an added track, and assigning a selected tone generator type to the track; and a tone generator selection operator for selecting any of the different types of tone generators; and the setting portion comprises: an addition portion which newly adds, in response to the instruction made by the start operator, a track; a tone generator offering portion which offers, after the addition of the track, options of available types of tone generators to be used for the added track; and a tone generator assigning portion which assigns, in accordance with the selection made by the tone generator selection operator in a state where the available different types of tone generators have been offered, a selected tone generator type to the track. a start operator for instructing start of a series of operations including adding a new track which is a unit to record/reproduce a musical event by use of the sequencer configured on the computer, offering options of available types of tone generators to be used for an added track, and assigning a selected tone generator type to the track; and a tone generator selection operator for selecting any of the different types of tone generators; and the setting portion comprises: an addition portion which newly adds, in response to the instruction made by the start operator, a track; a tone generator offering portion which offers, after the addition of the track, options of available types of tone generators to be used for the added track; and a tone generator assigning portion which assigns, in accordance with the selection made by the tone generator selection operator in a state where the available different types of tone generators have been offered, a selected tone generator type to the track. an addition portion which newly adds, in response to the instruction made by the start operator, a track; a tone generator offering portion which offers, after the addition of the track, options of available types of tone generators to be used for the added track; and a tone generator assigning portion which assigns, in accordance with the selection made by the tone generator selection operator in a state where the available different types of tone generators have been offered, a selected tone generator type to the track.