Possible Clues:

• Singer's voice, e.g
• Announcer's voice, metaphorically
• Source of income
• It provides food with tea, milk etc free
• Cattle Mike flogged for financial security
• *Wealthy spouse providing income, perhaps (1 to 7)
• Source of regular income
• One who supplies another's income
• *Arm, to an ace pitcher
• Supporter #3