... for why the folks doing job prep need to be able to read sheet music.(Also, why people producing lead sheets for wedding bands should learn about music notation conventions.)
I was given this chart for a wedding I led for one of the "offices". It was to be played at the chupa as the little kids walked down. The Russian conservatory trained trumpet player as well as the the sax player were both unable to read it in real time. So, I had to carry the melody for 'em.