Sky Blue Sky by Wilco is a contemplative song that explores themes of renewal, reflection, and the passage of time. The lyrics depict a sense of calm and introspection, with the 'sky blue sky' representing a clear and open mind or a new beginning. The song delves into personal growth and coming to terms with one's past mistakes, as well as appreciating the beauty in simplicity. A poignant moment in the song is when the lead voice croons about discovering contentment and peace in the ordinary aspects of life, suggesting a deeper, almost philosophical understanding of existence.