‘Straighten Up and Fly Right’ review: unforgettable

Nat King Cole's instrumental ability set him apart from vocalists like Sinatra and Fitzgerald. In this piece from The Wall Street Journal, Terry Teachout reviews Will Friedwald's Straighten Up and Fly Right: The Life and Music of Nat King Cole, which explores how Cole's musical genius and how all of America fell for his warm, close-grained baritone, while jazz aficionados swooned over his piano playing.