ic ient ▁piano ▁player ). ▁Ex amples ▁of ▁his ▁earliest ▁works ▁are ▁those ▁found ▁in ▁N anner l ' s ▁Music ▁Book . ▁Between ▁ 1 7 8 2 ▁and ▁ 1 7 8 6 ▁he ▁wrote ▁ 2 0 ▁works ▁for ▁piano ▁solo ▁( including ▁son at as , ▁variations , ▁fant as ias , ▁su ites , ▁fug ues , ▁r ondo ) ▁and ▁works ▁for ▁piano ▁four ▁hands ▁and ▁two ▁pian os . ▁ ▁Solo ▁piano ▁works ▁ ▁D ual ▁piano / perform er ▁works ▁ ▁P iano ▁four - hand s ▁▁ ▁Son ata ▁for ▁Key board ▁Four - hand s ▁in ▁C ▁major , ▁K . ▁ 1 9 d ▁( Lond on , ▁May ▁ 1 7 6 5 ) ▁ ▁Son ata ▁for ▁Key board ▁Four - hand s ▁in ▁D ▁major , ▁K . ▁ 3 8 1 / 1 2 3 a ▁ ▁Son ata ▁for ▁Key board ▁Four - hand s ▁in ▁B ▁major , ▁K . ▁ 3 5 8 / 1 8 6 c ▁ ▁Son ata ▁for ▁Key board ▁Four - hand s ▁in ▁F ▁major , ▁K . ▁ 4 9 7 ▁ ▁Son ata ▁for ▁Key board ▁Four - hand s ▁in ▁C ▁major , ▁K . ▁ 5 2 1 ▁ ▁Son ata ▁for ▁Key board ▁Four - hand s ▁in ▁G ▁major , ▁K . ▁ 3 5 7 ▁( in complete ) ▁ ▁F ug ue ▁in ▁G ▁minor , ▁K . ▁ 4 0