Euphonium Solo - Level 5 - Digital Download SKU: A0.792062 Composed by Richard Wagner. Arranged by Sauer, Ralph. Opera,Romantic Period. Individual part. 1 pages. Gordon Cherry #3041937. Published by Gordon Cherry (A0.792062). Shepherd's Song is heard in the prelude to the Finale, Act 3 of Wagner's great opera, Tristan & Isolde. It is a bleak and doleful lament played mostly unaccompanied by a shepherd boy keeping watch for Isolde's ship to arrive. The melody is later heard throughout scene 1. Ralph Sauer, has done a beautiful job in arranging this music (originally played offstage on the English Horn) for Euphonium. It is about 2 1/2 minutes in length and appropriate for advanced performers.