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I told them, ‘Is there a way we can find space for rubato, pianissimo, glissando — all of that — so we can really play in the music?’

Whenever he discovers some pretty little thing, the frame momentarily transforms into a commercial for excess, with a gleaming image of his unearthed treasure floating onscreen as a heavenly glissando tinkles in the background.

The new mix is stuffed like a Christmas turkey with harp glissandos and twinkly Christmas motifs.

His left hand hovers over the strings along the neck, a cylindrical tube held between his thumb and middle finger drawing the metallic tones into a smooth glissando when it touches steel.

Still, neither Nézet-Séguin nor the Philadelphia Orchestra are quite fluent in jazz, even given the principal clarinetist Ricardo Morales’s luxuriously, rapturously gooey upward glissando in the famous wail that opens “Rhapsody.”