Instrumental Duet Cello,Instrumental Duet,Violin - Level 4 - Digital Download SKU: A0.888677 By Sia. By Greg Kurstin, Sean Paul Henriques, Sia, and Sia Kate Isobelle Furler. Arranged by Heather Roche. Contemporary. Score and parts. 8 pages. Heather Roche #5213631. Published by Heather Roche (A0.888677). Cheap Thrills by Sia arranged for violin and cello duet.  .