Public Speaking Cryptic Crossword

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Across
  1. 1. Eloquence in written speech, wrong time to ditch it (8)
  2. 5. Break in the action, hidden in applause (5)
  3. 7. Changes in tone, ten into a new arrangement (10)
  4. 8. Encourage two heads of state to spin abroad (8)
Down
  1. 2. Quietly share secret or remain certain about point (7)
  2. 3. Mastery of public speaking, resulting in not a clue! (9)
  3. 4. Perform without preparation — is prime move rearranged? (9)
  4. 6. Argue about rearranged bed and eat
  5. 8. Persuade using tone
  6. 9. Captivate group missing head.