Bassoon Solo - Level 3 - Digital Download SKU: A0.580591 Composed by Traditional. Arranged by David Warin Solomons. 20th Century,Celtic,Contemporary,World. Individual part. 7 pages. David Warin Solomons #5370179. Published by David Warin Solomons (A0.580591). This is a song and military march which is traditionally said to describe events during the seven-year siege of Harlech Castle between 1461 and 1468. Commanded by Constable Dafydd ap Ieuan, the garrison withstood the longest known siege in the history of the British Isles.