Instrumental Duet Flute,Guitar,Instrumental Duet - Level 4 - Digital Download SKU: A0.906624 Composed by Adrian Allan. Contemporary,Romantic Period. Score and parts. 5 pages. Adrian Allan #2015607. Published by Adrian Allan (A0.906624). This is a new tonal work for flute and guitar. The music is very expressive and melodic, but features several shifts of key to keep the listener engaged.