Related Clues:

• Racket
• Horn sound
• Be loud, as a radio
• Proclaim noisily
• Trumpet sound
• Trumpet blast
• Tantara
• Siren's sound
• Proclaim loudly
• Sound loudly
• Use a trumpet
• Flamboyance
• Roar
• Loudspeaker sound (and a letter bank for 60-Across)
• Traffic jam noise