Idylle Opus 4 No.1 is a piece for Violin and Piano composed by Edward Elgar in 1884, as his Opus 4, No. 1. It has appended to the title the further description (Esquisse Façile). It was Elgar's first published work. It is transcribed here for Euphonium (or Trombone) and Piano by Eric Wilson. The solo part is supplied in both bass and treble clef.