What is the fine-grained topic of the following text: Portuondo, known in recent years as the female voice of the Buena Vista Social Club, is performing with a group led by Cuban afro-jazz pianist Roberto Fonseca, and featuring jazz violinist Regina Carter and clarinetist Anat Cohen, alongside several young Cuban players. Only return the topic.
Portuondo's performance with Roberto Fonseca's group and other musicians