The highlight of this year’s Piobaireachd Society Conference had to be the playing of Iain Speirs, writes PS Vice President Robert Wallace. Iain, the consummate professional, was asked to illustrate a paper given by John  Shone on the life and career of one of the greatest pipers of all time, Donald MacPherson. With a beautifully set pipe, Iain thrilled the large number of attendees with outstanding performances of ceol beag, the urlars…