Possible Clues:

• Sound fruit, they say
• In sound, the perfect thing is to test depth
• True choice on radio
• Sound - fruit's sound
• Exactly - . . . . . in the middle
• Sound piece of fruit, say
• Wait at the end of the line, by the sound of it, but not for Jack Horner
• Take soundings at sea
• Reach or experience, say the depths
• Poorly rig example for composer