REO Speedwagon are many bands in one, so a deep dive reveals delightful surprises. With reflective verses and a snappy, upbeat chorus, “The Key” makes huge sonic shifts in the space of a single song. Whether taking on a country-style ballad (“I Wish You Were There”), openhearted sing-alongs (“Love Is a Rock”), or chugging hard rock with squealing lead breaks (“Smilin' in the End”), they write tunes that never fail to hit the arena roof.