What is fernando singer?

As an AI language model, I don't have access to any specific information about people unless it's available on the public domain. However, in general, there are a few well-known individuals with the name Fernando Singer online. One of them is a Brazilian artist who is known for his paintings and sculptures, while another is a businessman who is the CEO of Printi, a Brazilian printing startup. Without any specific information about which Fernando Singer you're referring to, it's not possible to provide any further information.