B-Flat Bass Clarinet - Level 3 - Digital Download SKU: A0.1083473 Composed by Wolfgang Amadeus Mozart. Arranged by Nicolas Ernesto Cortes Castillo. Classical,Sacred. 7 pages. Nicolas Ernesto Cortes Castillo #687452. Published by Nicolas Ernesto Cortes Castillo (A0.1083473). Lacrimosa, from Requiem in D minor, K. 626; arranged for clarinet quartet. In original key. Full score and parts included. Approximate duration: 2 minutes.