The black Skyeman

"He used to be a singer in his younger days, and a notable piper, too, but his voice was old and cracked now and the rheumatics had put an end to his piping for good a matter of seven years before. Only once had he put finger to reed since then and that was five years back when he had the argument with the black Skyeman about a tune."

"Sometimes, too, the argument would get hot enough in a friendly kind of way, and if it was about piping it would end by someone taking down the pipes and striding out to the patch of grass at the side of the shop with the whole company trooping at his heels, all except old Iain Mor himself who sat in his chair and bent an attentive ear. Every now and then someone would come in to tell the stage of the argument and demand his opinion, which he would then carry out to the men at the gable, who would pause in their arguing to listen and then be at it again. At times a whole evening would be passed in this way, the men arguing at the end of the house and only pausing now and again when someone took the pipes and stepped aside to play over a part of the tune to illustrate some technical matter, and he as like as not continuing the discussion for a bit with the bag hanging limp and the chanter held ready between his teeth."

The Albannach, Finn Mac Colla, 1932

Yes - it really does say that the chanter is between his teeth!