Luckily, many improvisations of those who mastered the skill have been captured in recordings. Through digital mastering the sounds are brought to new life. Two of the improvisations here are played by Langlais at Ste-Clotilde, Paris, one on a small Christensen organ in Germany, and on the Rieger organ (1970) in the Cistercian abbey church in Marienstatt.
B.A.C.H; Aus tiefer Not; Improv. on a French NoŽl; Puer natus est