Sinead O'Connor is an Irish singer-songwriter known for her emotive voice and raw, passionate delivery. Her music is largely characterized by elements of pop, rock, and folk, often interwoven with political and religious themes. She gained international prominence in the late 1980s with her debut album "The Lion and the Cobra," and her 1990 rendition of Prince's "Nothing Compares 2 U" remains one of her most iconic performances. Despite controversy surrounding her outspoken views, O'Connor's influence in the music industry is undeniable, and she continues to be a significant figure in alternative music.