Mortier - Clarinet Quartet No. 1 - CQ1270EJM Editions Maurer Sale! from $40.00 Choose format: Printed Book Only Printed book and PDF via Email INSTANT PDF Qty. Add to Cart SKU: CQ1270EJM Clarinet Quartet No. 1 by Willy Mortier. Instrumentation: 3 B-flat Clarinets Bass Clarinet