BAAING

Set to 3 different clues across 3 published puzzles, most often “It might keep a shepherd awake” — The New York Times, Wednesday, 8 March 2000.

6 letters

Every clue on record, most used first

It might keep a shepherd awakeonce
The New York Times — Wednesday, 8 March 2000
It didn't keep Little Boy Blue awakeonce
The New York Times — Sunday, 14 June 1998
Sheep noiseonce
The New York Times — Monday, 25 November 1996