Related Clues:

• This will shut up at one-fifty in the morning
• What fun to sing so high!
• Just the shade of a flier by Maeterlinck
• Singls only on high notes - for fun, perhaps
• It's one-fifty in the morning, so shut up (4)
• What a joke to sing so high! (4)
• Sounds as if it was blowing just a shade 21 down
• By the sound of it, it got the wind up and flew away
• What a joke to have such a high voice
• Have nothing to say at 1.50 in the morning
• 'It's 150 in the morning, so shut up (4)'
• Sounds as if it was blowing as well as flying
• Upland bird
• It's underwater at 1:50 AM
• Mischievous prank