Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "Whistle" doesn't work

Looks pretty, but do not expect it to whistle. It whistled the first time I used it - a humming tone, like a distant emergency siren. Hasn't worked since. I think the thin metal reeds are good for one use only and become too weakened at their flex points to stay properly "tuned". I followed previous reviewer's ("researchingmom") instructions for fixing the whistle, and it whistles when I blow it strongly, but it won't whistle under steam power.