Requiem op. 89 Urtext edited by Klaus Döge [solos,ch,orch] duration: 95' solos: SATB ' choir: SATB ' 3(picc).3(cor ang).3(B-clar). 3(dbl bsn). ' 4.4.3.1. ' timp.perc' hp' org ' str Dvo ák's Requiem is one of the Czech composer's great sacred works and one of the greatest Requiem settings in music history.