Some sensations occur without much ado, as they seem to be a matter of course. One such sensation took place at the Berlin Philharmonic Hall in 1978 when Herbert von Karajan introduced the 14-year-old violinist Anne-Sophie Mutter to the public in Mozart's G major Concerto. Karajan invited Mutter to make her concerto debut with the Berliner Philharmoniker at the Salzburg Whitsun Festival in 1977, which led to their collaboration on this recording. Despite sending her away to mature for a year after their initial meeting, the second session was a success and a lesson that Mutter has never forgotten. "We sat next to each other studying the score as the daylight died, too engrossed to turn on the lights, and he talked about legato and bow changes and fingerings. Whenever I said, 'This is not possible, maestro,' he'd say, 'I don't care if it is violinistically possible; it must be musically possible. Everything you do must be driven from the point of view of music making.'"