tracks 7, 12 to 14 baritone vocals Gareth Brynmor John
tracks 16 harp Catrin Finch
tracks 1 to 14, 17 to 22 piano Andrew Matthews-Owen
tracks 15 to 17 soprano vocals Elin Manahan Thomas
tracks 20 to 22 soprano vocals Natalya Romaniw
tracks 1 to 6 soprano vocals Rebecca Evans
tracks 8 to 11 soprano vocals Susan Bullock
tracks 18, 19 tenor vocals Elgan Llyr Thomas