 Symphony for Solo Piano ( Op. 39 , no . 4 @-@ 7 ) – played by Egon Petri ( piano ) . c . 1952 – 53 . Symposium Records , CD 1145 ( 1993 ) 
 Symphony for Solo Piano ( Op. 39 , no . 4 @-@ 7 ) – played by Egon Petri ( piano ) . c . 1952 – 53 . Symposium Records , CD 1145 ( 1993 ) 
Symphony for Solo Piano ( Op. 39 , no . 4 @-@ 7 ) – played by Egon Petri ( piano ) . c . 1952 – 53 . Symposium Records , CD 1145 ( 1993 )