Instrumental Duet,Piano Cello,Flute,Instrumental Duet,Piano - Level 2 - Digital Download SKU: A0.1212895 Composed by William Runyan. Arranged by Tyler Adams. Christian,Praise & Worship,Religious,Sacred,Traditional. 13 pages. Adams Arrangements #810109. Published by Adams Arrangements (A0.1212895). Great Is Thy Faithfulness warmly arranged as a duet for flute and cello with piano accompaniment.