Related Clues:

• Stairstep segments
• Choir stands
• 'The Thirty-Nine __'
• Increments
• Household ladder, to Liverpudlians
• Choral platforms
• Arthur Murray instruction
• Flight features
• Platforms for choirs
• Way up or way down
• Choir supports
• Assembly-instruction parts
• Chorus platforms
• Progress parts
• Staircase units