A white gardenia in a glass box for Rannaldini to slot into his buttonhole was delivered to the Maestro’s dressing room. Most of the flowers arriving were for Cecilia Rannaldini, his second wife, who was singing Eboli, and who now could be heard screaming, ‘When will people learn I only like red roses,’ as she hurled everything else on to the floor.

Chic and svelte for a diva, Cecilia had done much to advance Rannaldini’s career, not least by changing her famous name to his. Having barged into the conductor’s room and smothered Tristan in kisses, she started rowing with Rannaldini in Italian.

Carlos was being sung by a plump, good-looking Italian, Franco Palmieri. Rannaldini’s latest discovery, an unknown South African called Hermione, was making her début as Elisabetta.

The packed audience was too old to interest Tristan but, with his chin resting on the front of the red velvet box, he gazed down in wonder at the glittering instruments in the pit. Opposite him were the cellos and behind them towered the double basses, red-gold as beeches in autumn. But once the action started on stage, and hunting horns heralded Hermione as Elisabetta riding in on a real grey horse, Tristan hardly noticed the orchestra. Hermione’s thick brown hair did indeed curl to her waist and he couldn’t take his eyes off her cleavage, which seemed to part like curtains whenever she hit a high note — and how gloriously she sang!

Rannaldini’s black hair was drenched with sweat, as his dark eyes sent laser beams to singer or musician so they responded almost without realizing it. Now he was smiling at Hermione, magicking increasingly beautiful sounds with a twitch of his baton.

Cecilia Rannaldini had a pure, clean voice. But, not realizing that shouting and crying all night can harm the vocal cords, Tristan thought she sounded very rough. She was, however, a great actress and, as she glared at Hermione, put him in mind of the wicked queen in Snow White. King Philip, on the other hand, was so stern and cold with his son Carlos, he reminded Tristan of his own father, Étienne.