Zoot Sims - "A Summer Thing"
If this list skewed a little closer towards jazz, "A Summer Thing" might just be a soldier in the greater army of great saxophone lullabies. The instrument is made for that sort of feeling—it's drowsy and smooth, designed to calm your brain down and walk you through the transition between cat and nap. Though Zoot knows his way around the horn, it's Bucky Pizzarelli's jazz guitar that really gives this "Thing" its slumber. Sheer bliss.