Related Clues:

• 50 = 10 in order to get sound
• Try to get sound from this if it's silent
• Give an ear for what's silent
• 50 = 10 to get it sound
• 'It's agreeing to double this on approval, by the sound of it (4)'
• Lent is a sound thing to do
• 50 = 10, perhaps
• Catch some waves?
• 50 = L - XL
• Learn via the grapevine
• The way to appear in the right - take notice!
• The fellow has a right to 9
• The guy has a right to try
• Attend to small boy, first to go in
• Listen to endless organ