Incledon sang both in opera and in oratorio, but his chief popularity lay in his delivery of ballads ('not the modern sentimental composition, but of the robust old school'), such as "The Lass of Richmond Hill", "Sally in our Alley", "Black-eyed Susan", "The Arethusa", and anything of a bold and manly type. He enjoyed an undiminished popularity of twenty-five or thirty years's duration. He was a very forthright man, given to speaking his mind openly to all and sundry (sometimes with humorous results), which also showed itself in the freedom and natural expression of his singing, and he had ample vocal resources to sustain the flights of interpretative impulse which enlivened his performances. A somewhat vain man, who affected gold jewellery and snuff-box, he regarded himself (not entirely without cause) as "the" 'English Ballad Singer.' Edward Fitzball, who as a lad saw him play Macheath, remembered him being very fat, with an immense white cravat in which his chin seemed buried, his costume a blue dress coat with gilt buttons, a white waistcoat, leather 'smalls' and top boots.