Possible Clues:

• The middle section of a human foot
• Like good marchers
• Dancing together
• Upper part of a foot
• One spent carelessly on a bit of a shoe
• Agreeing to differ isn't the last you'll see of Mike Pence
• Walking in unison
• Vergers leaving church and parking in part of Oxford?
• Foot or shoe part
• One note rung, displaying harmony