Buffalo Springfield's folk and country helped establish a sound that Americana blossomed from. Their shuffling, laidback style and golden harmonies breeze into the melodies of The Flying Burrito Brothers' “Wheels” and resonate in the delicate arrangements of Whitney's blissful, summery “Light Upon the Lake.” And My Morning Jacket's gorgeous, twangy “Just Because I Do” conjures Buffalo Springfield's organic '70s vibe.