Catalog Number: 4866121 Color: Black Format: LP UPC: 028948661213 Four of Mozart's Piano Concertos have been released by Friedrich Gulda, Claudio Abbado and Wiener Philharmoniker on Deutsche Grammophon in the 1970s - all of them enjoy cult status today. Following the release of Concertos Nos. 25 and 27 as part of The Original Source Series, which met with an overwhelming response, Piano Concertos Nos. 20 and 21 are now also being reissued. To improve the audio quality, they have also been redistributed onto 2 LPs.