Plenty of orchestras have embraced the trend of performing concert versions of the musical scores to video games, so it probably shouldn’t surprise anyone that the Houston Symphony is planning a concert of music from the National Football League. You didn’t know the NFL produced original music? Silly you. The league has, in fact, had not one but three composers on call over the last 40 years, writing the full orchestral scores you hear under the voice of Harry Kalas on the film-quality highlight reels put out by NFL Films.