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But the payoff for me came when he demonstrated the station’s rare 1934 diaphone fog signal, which sounds off with two descending blasts, basso profundo.

Artificial intelligence can paint meddlesome monkeys, speak in the basso profundo of James Earl Jones and play a tune to suit a hall of mirrors.

There’s a flicker of ironic recognition in the old man yet, for Shakespeare’s verse still flows elegantly out of Page’s basso instrument.

As the God of Love, Phillip Bullock travels from airy falsetto to basso profundo depths.

Exaggerating some of the singer’s vocal qualities — the basso burr and steel-wool growls — he instead adds value while suggesting character.