Publisher Desc.  What Child is This (Greensleeves) commands most of this arrangement with Joseph Dearest, Joseph Mine appearing in the latter section. A beautiful solo appropriate for worship or concert. C (Treble Clef) Instruments (Flute, Oboe, Violin). A 16-measure improvisation section encourages performers to create or play what is notated. Duration: 3:24. Key: Fm/Ab. Set of Parts.