About 7 million people in Catalonia speak Catalan, although most are either bilingual in Spanish or trilingual in Spanish and another language. The roots of the language are Latin so they share many similarities with the other Romance languages. They are a mixture of Italian, Spanish, and French. Although Catalan is most similar with Occitan which is another romance language in the region. On a side note, some famous Catalonians you may have heard of include Salvador Dali the surrealist painter, Antoni Gaudi the architect, and Catharine of Aragon the first wife of King Henry VIII.
Here is a link to some of Piera’s poetry.