Giuseppe Verdi Ed: David Heyes . This famous cello and bass solo is playable by sextet or larger forces. The melodic material is shared between basses 3-6 and is a useful way to study this evocative aria in a bass ensemble setting. The music is dark, sinister and dramatic, always effective and atmospheric, and offers many musical and technical challenges for the good intermediate ensemble. Useful as both study and concert repertoire.. Performance Level: 7;8.. Grade: 7 - 8