Possible Clues:

• Metallic Brisbane beer?
• Aussie canned beer that's cheap and nasty
• Beer down under is thin and metallic
• Sounding like toy pianos
• Of very poor quality
• Aussie's canned beer that's cheap and nasty
• Thin-sounding
• Having a high metallic sound
• Of poor audio quality
• Made of metal, little boxes never for opening