In the summer of 1968, a few days after the brutal suppression of the “Prague Spring”, the Czech émigré Rafael Kubelík conducted a gripping concert in his adopted home city of Lucerne: a Haydn Symphony, full of joie de vivre, and a passionately glowing account of Tchaikovsky’s Fourth Symphony frame Schoenberg’s Piano Concerto, played by the British piano legend John Ogdon in his only appearance at Lucerne Festival.