György Sándor /
Bartók /
Book I - Mikrokosmos No. 4, Sz. 107, BB 105, No. 4 'Unison Melody IV'
December 30, 1950 in New York City - Columbia 30th Street Studios
- ( 1 LP ) Columbia ML 5082
- ( 3 LP ) Columbia SL-229
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- (17 CD) Sony 19075938822
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