Possible Clues:

• To-do items to tick off ... and what the starts of the answers to starred clues comprise
• East European composer cited points to be considered?
• Announce Czech composer on the radio with reminder of records
• What's used to verify threat to King going over border
• Reminder of reported nickname of Prague piano virtuoso?
• European composer, in recital, has things to do
• Be inclined to follow slow sort of schedule
• Written record of things to be done
• Inventory
• European composer uttered 'things to do'?