A music promoter sometimes adds a band buy-ouy provision to a contract for a show in lieu of providing a certain service for the musicians. Buy outs are shows are often used in place of the rider/catering, but sometimes musician buy-outs are used for things like accommodation as well.
When there is a buy out provision in the contract, the promoter will pay the musicians the money they would have spent on buying the rider, paying for a hotel and so on. Sometimes, musicians prefer this kind of set-up because they can get exactly what they want and because sometimes they come out ahead financially - they might end up spending less on food and drinks than he promoter paid them for those costs, for instance. Often, buy-outs are handy for promoters as well. They can forget about the pressure of shopping for the rider and booking rooms, and they don't have to worry about the band being displeased with what they have provided.
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