Tuba Quartet Euphonium,Tuba - Level 3 - Digital Download SKU: A0.1407422 By Coven. By Brian Potter and Dennis Lambert. Arranged by Tim Olt. Folk,Pop,Singer/Songwriter. 9 pages. Olt Music #990102. Published by Olt Music (A0.1407422). Born from the anti-war culture of the 1960s, this tune has relevence even today.