Instrumental Duet Flute,Guitar,Instrumental Duet - Level 2 - Digital Download SKU: A0.556713 Composed by William Cummings. Arranged by PianoSheetNow. 20th Century,Christmas,Contemporary,Romantic Period,Sacred. Score and parts. 4 pages. PianoSheetNow #5023123. Published by PianoSheetNow (A0.556713). Hark! The Herald Angels Sing is a Christmas carol that first appeared in 1739. It features lyrical contributions from Charles Wesley and George Whitefield, with music adapted from by Felix Mendelssohn's Vaterland, in deinen Gauen by William H. Cummings.For Flute and Guitar duet.