A sound control device comprising: a storage unit that stores text data including a first syllable and a second syllable that are delimited by lyrics, a first sound generation control parameter that is associated with the first syllable and that determines an output mode of the first syllable, and a second sound generation control parameter that is associated with the second syllable and that determines an output mode of the second syllable; and a performance operator that receives a start instruction indicating a start of output of a sound, wherein the storage unit further stores grouping information indicating that the first syllable and the second syllable are grouped, the sound control device further comprises: a reading unit that reads the first syllable, the first sound generation control parameter, and the grouping information from the storage unit e, in response to the start instruction being received; and a control unit (10, 13, 14) that causes a singing sound indicating the first syllable to be output in a mode according to the read first sound generation control parameter, characterised in that the reading unit is configured to, in a case where it has been determined that the first syllable is grouped with the second syllable based on the grouping information, read the second syllable and the second sound generation control parameter from the storage unit, the control unit (10, 13, 14) causes a singing sound indicating the second syllable to be output in a mode according to the read second sound generation control parameter, the first and second syllables are sounded at a pitch of the performance operator by one continuous operation of the performance operator, and the second syllable is generated in accordance with an operation of moving away from the performance operator. a storage unit that stores text data including a first syllable and a second syllable that are delimited by lyrics, a first sound generation control parameter that is associated with the first syllable and that determines an output mode of the first syllable, and a second sound generation control parameter that is associated with the second syllable and that determines an output mode of the second syllable; and a performance operator that receives a start instruction indicating a start of output of a sound, wherein the storage unit further stores grouping information indicating that the first syllable and the second syllable are grouped, the sound control device further comprises: a reading unit that reads the first syllable, the first sound generation control parameter, and the grouping information from the storage unit e, in response to the start instruction being received; and a control unit (10, 13, 14) that causes a singing sound indicating the first syllable to be output in a mode according to the read first sound generation control parameter, characterised in that the reading unit is configured to, in a case where it has been determined that the first syllable is grouped with the second syllable based on the grouping information, read the second syllable and the second sound generation control parameter from the storage unit, the control unit (10, 13, 14) causes a singing sound indicating the second syllable to be output in a mode according to the read second sound generation control parameter, the first and second syllables are sounded at a pitch of the performance operator by one continuous operation of the performance operator, and the second syllable is generated in accordance with an operation of moving away from the performance operator. a reading unit that reads the first syllable, the first sound generation control parameter, and the grouping information from the storage unit e, in response to the start instruction being received; and a control unit (10, 13, 14) that causes a singing sound indicating the first syllable to be output in a mode according to the read first sound generation control parameter, characterised in that the reading unit is configured to, in a case where it has been determined that the first syllable is grouped with the second syllable based on the grouping information, read the second syllable and the second sound generation control parameter from the storage unit, the control unit (10, 13, 14) causes a singing sound indicating the second syllable to be output in a mode according to the read second sound generation control parameter, the first and second syllables are sounded at a pitch of the performance operator by one continuous operation of the performance operator, and the second syllable is generated in accordance with an operation of moving away from the performance operator.