Possible Clues:

• It will encourage one to listen to double figures
• Just listen to double figures - that'll encourage you
• Make (someone) more confident
• Inspire anew
• It will encourage one to get the sound of X
• Hear only half the score, yet cheer
• Listen to a number and take courage
• Catch small number giving cheer
• By the sound of it, get X to encourage you
• Be told profit's up to raise spirits