Couple of things . First, it is not a hard song to sing, for a trained singer. Heck, Rossini or Shoenberg are hard to sing....I studied voice for 35 years, and sang professionally from 18 to 42. Second, the song has been bastardized by a lot of people, it's true. The current all consuming desire to change the style of all music to a black style is tiresome for people who do not like that style. The National Anthem as an official piece, was done as written until black singers felt the need to "improve" it. In my opinion, they did no such thing. They just made it a cartoon. The last couple of years, we have been getting hammered pretty heavily with Afro Centrism. Tired of that, too. Plenty of songs are poems set to music. It is often the lyrics that inspire the choice of music, whether lifted from another song, or original. Cant say it makes for a song that is any more difficult to perform.
