Instrumental Duet Instrumental Duet,Viola,Violin - Level 3 - Digital Download SKU: A0.1160746 Composed by Alessandro Scarlatti. Arranged by Ian Butterworth. Baroque. Score and parts. 8 pages. Ian Butterworth #761050. Published by Ian Butterworth (A0.1160746). This lively keyboard sonata is well-suited for violin & viola duet with answering passages between the two instruments.  Through the experience of teaching violin at all levels and conducting youth orchestras over many years, Ian Butterworth's large number of compositions and arrangements have been enjoyed by youth orchestras and amateur players.www.ianbutterworthmusic.co.uk