Instrumental Duet Cello,Instrumental Duet,Violin - Level 5 - Digital Download SKU: A0.966331 Composed by Martin Bonk. 20th Century,World. Score and parts. 10 pages. Martin Bonk #2033207. Published by Martin Bonk (A0.966331). I didn't set out to write about a Leprechaun Apocalypse With Rapture but when it was done that's what it sounded like to me.