Instrumental Duet Cello,Double Bass,Instrumental Duet - Level 2 - Digital Download SKU: A0.1012011 Composed by McKayla Weaver. 20th Century,Romantic Period. Score and parts. 2 pages. McKayla Weaver #3520659. Published by McKayla Weaver (A0.1012011). In an effort to create a harmonizing, yet playable piece for students, Freundschaftslied in G-dur expresses a friendship between both the bass line and cello line to create a lovely melody.