Is this an obsession? D minor. Many of the classical compositions I truly love are written in D minor: Schubert’s String Quartet no. 14 “Death and the Maiden”, Bach’s Cello Suite No. 2, Mendelssohn’s Symphony No. 5 “Reformation”. And Johannes Brahm’s Piano Concerto No. 1, Op. 15. Aimez-vous Brahms? Oh, oui! I actually discovered this composer precisely through the novel “Aimez-vous Brahms?”, published by Françoise Sagan in 1959.