Related Clues:

• Wield, as influence
• Exercise authority
• Apply elbow grease
• Tool
• One may be full of scales
• Take up
• Kin of a crunch
• Chopin's "Butterfly," e.g.
• Get fit
• Play for a fool
• "Oh, what's the ___?"
• It may be written on a chalkboard
• Liszt's "Paganini ___"
• Put in practice
• Avail