György Sándor /
Bartók /
Book VI - Mikrokosmos No. 140, Sz. 107, BB 105, No. 1 'Free Variations'
December 28 - 29, 1955 in New York City - Columbia 30th Street Studios
- ( 1 LP ) Columbia ML 5084
- ( 3 LP ) Columbia SL-229
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- (17 CD) Sony 19075938822 - 00:01:37
1961
- ( 3 LP ) Vox SVBX 5425 A
- ( 3 LP ) Vox SVBX 5425 B
- ( 3 LP ) Vox VBX 425
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- ( 5 CD ) Vox CD5X 3610