 Scholes quotes a keyboard piece by John Bull (1619) which has some similarities to the modern tune, depending on the placing of accidentals which at that time were unwritten in certain cases and left to the discretion of the player (see "musica ficta").He also points to several pieces by Henry Purcell, one of which includes the opening notes of the modern tune, setting the words "God Save the King".Nineteenth-century scholars and commentators mention the widespread belief that an old Scots carol, "Remember O Thou Man", was the source of the tune.