Related Clues:

• Come to the party
• Listen
• Show up at
• Be a student at
• Go to, as a concert
• Go to the game
• Go to, as a class
• Admonition to 20-, 32- and 42-Across
• See (to)
• Sit in
• 'Listen up!'
• Be present at
• Make an appearance at
• Come to, as an event
• Show up for class