Artists and rights activists are pushing the Cuban government to change a law that they fear will hurt creativity and increase censorship. The law is to take effect next month. It bars artists and musicians from “providing their services” in any place open to the public, including privately owned spaces, without first getting government approval. The Cuban government in 2010 adopted a reform measure to require government approval only for state-run places. Since then, artists and musicians have presented their work in private as part of a wider push for economic, social, and political reforms in Cuba. Artists and musicians have been able to produce more work and expand their offerings, with increased internet access and greater freedom to travel. But that has also made it harder for the government to collect taxes and oversee their works. The new law worries some independent artists, who fear they will not be able to get state approval. That could cost them their livelihood.