Possible Clues:

• Pass the time of day on small mountain
• Part 7 of today's quote
• Utilize a microphone
• Command to a canine that's obeyed in 17-, 24-, 53-, and 63-Across
• 'Bark, Bowser!'
• Deliver a lecture, say
• "Bark, Bowser!"
• Address, with 'to'
• Get to have one's say
• Give speech from south summit