Yousuf Islam, formerly known as Cat Stevens, is a British singer-songwriter born on July 21, 1948. He gained fame in the 1960s and 1970s with hits like "Wild World" and "Father and Son." His music is characterized by its folk style and introspective lyrics. In 1977, Yousuf Islam converted to Islam and stepped away from his music career for many years. He later returned to the music scene, focusing on themes of peace and spirituality. Today, he is also known for his philanthropic work and advocacy for various humanitarian causes.