Klavierduo Trenkner-Speidel
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Symphonies no. 1 & 2 (arr. for Piano 4 Hands by Bruno Walter) (2013)
Gustav Mahler , Bruno Walter ; Piano Duo Trenkner/Speidel
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Orchestral Suites / Passacaglia / Toccata and Fugue / Prelude and Fugue (2000)
Johann Sebastian Bach / Max Reger ; Piano Duo Trenkner-Speidel
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Symphony no. 3 (1995)
Anton Bruckner (arr. Gustav Mahler ); Klavierduo Trenkner-Speidel
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