– 1 5 , ▁are ▁unique ▁in ▁that ▁they ▁include ▁an ▁ad ▁lib . ▁c ello ▁part ▁along ▁with ▁the ▁score ▁for ▁viol in ▁and ▁keyboard . ▁The ▁Neue ▁Moz art - Aus gabe ▁( 1 9 6 6 ) ▁therefore ▁includes ▁them ▁along ▁with ▁the ▁other ▁keyboard ▁tri os , ▁although ▁the ▁Kö ch el ▁catalog ue ▁( K 6 , ▁ 1 9 6 4 ) ▁lists ▁them ▁as ▁normal ▁viol in ▁son at as . ▁ ▁Child hood ▁viol in ▁son at as ▁( 1 7 6 3 – 6 6 ) ▁ ▁Vi olin ▁Son at as , ▁K V ▁ 6 – 9 ▁( 1 7 6 4 ) ▁Vi olin ▁Son ata ▁No . ▁ 1 ▁in ▁C ▁for ▁Key board ▁and ▁Vi olin , ▁K . ▁ 6 ▁Vi olin ▁Son ata ▁No . ▁ 2 ▁in ▁D ▁for ▁Key board ▁and ▁Vi olin , ▁K . ▁ 7 ▁Vi olin ▁Son ata ▁No . ▁ 3 ▁in ▁B ▁for ▁Key board ▁and ▁Vi olin , ▁K . ▁ 8 ▁Vi olin ▁Son ata ▁No . ▁ 4 ▁in ▁G ▁for ▁Key board ▁and ▁Vi olin , ▁K . ▁ 9 ▁Vi olin ▁Son at as , ▁K V ▁ 1 0 – 1 5 ▁( 1 7 6 4 ) ▁Vi olin ▁Son ata ▁No . ▁ 5 ▁in ▁B ▁for ▁Key board ▁with ▁Vi olin ▁( or ▁Fl ute ) ▁and ▁c ello , ▁K . ▁ 1 0 ▁Vi olin ▁Son ata ▁No