Possible Clues:

• The other half of a tuba sound
• Sound of disgust
• Cry of contempt
• Oom-___ (tuba sounds)
• Oom- -- (tuba sound)
• The old man articulated an expression of disgust
• Oom-___ (polka rhythm)
• “That’s ridiculous!”
• Oom- — (polka sound)
• Oom- — band