The latest iteration took flight in 2007 after Israeli private-equity firm Fortissimo Capital bought the firm.

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He turned to the orchestra, told them the cue, and picked up from a vigorous fortissimo section.

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Violinist Nick Kitchen says that Beethoven's "Great Fugue" contains what may be the most extended music played continuously at the fortissimo level.

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Mr Johnson said the expansion of Heathrow would be a "giant step backwards for London", giving rise to "great flying fleets of fortissimo flatulence".

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