ALBUMHans HolewaLeon Spierer, Ulrich Fritze, Jorg Baumann, Jose Ribera, 레이프 세게르스탐, 스웨덴 방송 교향악단, Miklos Maros, Magnus Andersson, Strangnas Sinfonietta, members, Emil Dekov, Ase Enhamre, Claes Merithz & Stig Bengtson
ALBUMBeethoven: Sonata for Violin & Piano Nos. 9 and 10Leon Spierer & Ernst Groschel
ALBUMBeethoven - Violin Sonatas No, 5 Op. 24 "Spring" & No. 9 Op. 47 "Kreutzer"Erich Appel, Leon Spierer & Ernst Groschel