CMINOR

Set to 2 different clues across 2 published puzzles, most often “Key of Beethoven's Fifth” — The New York Times, Wednesday, 2 July 2008.

6 letters

Every clue on record, most used first

Key of Beethoven's Fifthonce
The New York Times — Wednesday, 2 July 2008
Key of Beethoven's Symphony No. 5once
The New York Times — Wednesday, 27 July 2005