Vest frottoir
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A vest frottoir is an instrument used in Zydeco music. It is usually made from pressed, corrugated aluminium and is worn over the shoulders.
It is played as a rhythm instrument by stroking either bottle openers or spoons down it. Many of these instruments are home made, but Don Landry of Louisiana is a renowned maker of frottoirs - or rub-boards as they are known, making them for Clifton Chenier's band and Elvis Fontenot and the Sugar Bees, amongst others.