Possible Clues:

• Musical intervals
• Generous portions of pie
• A-to-F intervals
• Intervals in boundary, closed with no U-turns
• Pie wedges in Trivial Pursuit, e.g
• Teaspoons, to a fluid ounce
• Trivial Pursuit wedges, e.g
• Trivial Pursuit wedges, vis-Г -vis the whole pie
• Large pie pieces
• Wedge fractions in Trivial Pursuit