I once asked Ewan MacColl in the bar at the Princess Louise at the interval of a Ballads & Blues evening in about 1957 why he had just sung Eppie Morrie unaccompanied whereas the previous week he had done it with a driving accompaniment from Peggy's banjo: "Is it just how you happen to feel?" Unhesitatingly he replied, "Yep, that's all; just how I happen to be feeling."

If it was good enough for Ewan...