According to Karajan's own account, it was during the summer of 1965, while he was working on Boris Godunov, that he had a vision of the future: "I suddenly sensed a burning desire to stage and conduct Wagner in Salzburg." His dream, very much in the spirit of Wagner himself: "My baton shall teach future ages which road they have to take." The Original Source Series from Deutsche Grammophon features celebrated recordings reissued on vinyl. Remastered by the renowned Berlin-based Emil Berliner Studios using 100% pure analogue techniques to create versions of the highest possible audio quality. Produced on 180g virgin vinyl by Optimal and housed in deluxe gatefold editions, featuring additional photos and/or recording documentation. For the first time, OSS will use the original stereo master 2-track tape as source. Starting with 4-track in 2023 and expanding to 8-track in 2024, the year 2026 will see the first 2-track OSS release.