Shortly after its first release in 1975, it was already a classic: Claudio Abbado's interpretation of Tchaikovsky's 4th Symphony with the Vienna Philharmonic. "The pull and concision, the electrifying control of the tension immediately (...) put it at the top of a long list", was Gramophone's verdict many years later. Now this recording is being presented again on vinyl. To mark its 125th anniversary, Deutsche Grammophon is releasing legendary recordings in the highest sound quality: the new audiophile vinyl series The Original Source presents outstanding recordings from the 1970s in a completely new sound quality. The renowned Emil Berliner Studios have remastered and edited the original four-track tapes in 100% analog quality (AAA) using technologies specially developed for the production of the series. The sonic differences to the original releases are considerable: greater clarity, more subtleties and improvements in the frequency response, as well as less background noise, distortion and compression make for an audiophile listening experience like never before. The copies of this series will be released on 180g vinyl records and in a deluxe gatefold edition with original covers and lyrics, limited and numbered. They are accompanied by additional photos and facsimiles of the recording logs and tape boxes, and an article explains the exact technical background.