Historical clue formulations

• Musical effect that comes from the Italian for "to play on a harp" — 2023-12-16
• Notes of a chord played in rapid succession — 2017-04-24
• Harpist's progression — 2008-01-30
• Concert run? — 2003-01-25
• Pianist's challenge — 2000-05-07
• Musical run — 2000-04-09