The Scotsman

An orchestra is being recreated to play in its original form a musical code hidden in the ceiling of Rosslyn Chapel. The 500-year-old code was discovered last year, hidden in 213 cubes in the medieval chapel in Midlothian. Scottish composer Stuart Mitchell was hailed a genius after unravelling the complex sequence, which had mystified historians for generations. But the piece, named The Rosslyn Canon of Proportions by Mr Mitchell, has never been heard as it was intended. Of the 13 medieval instruments depicted on pillars by the chapel's architect, William Sinclair, two no longer exist. Now a team is building all 13 instruments - including bagpipes, whistles, a trumpet, a medieval mouth piano and a guitar - so that the piece can be played as it was in the 15th century. Mr Mitchell, who has already arranged the notes in an authentic 15th-century manner, says in a BBC Radio Scotland interview to be broadcast today: "Ultimately, I just want a musical result as authentic as William Sinclair intended.