I went to high school with a girl who didn't know who the Beatles were. Here's the story: The school jazz band was playing an arrangement of "With A Little Help From My Friends" and on the program the writing credits said "Lennon/McCartney". So this girl comes to me the next day in the middle of a class with a program and says "Who are these guys?" To keep it simple I said they were two members of the Beatles. She says, "I've never heard of them before! Are they good?" The whole class started laughing.
I was diagnosed with dyslexia when I was about 10, so up until then teachers and other students used to think I was a little dumber than every one else because I couldn't read or write at the same level as everybody in the class. But getting a diagnosis helped tremendously and I started to practise reading and writing like hell. My comprehension and math skills improved as well. Now I'm halfway through university. But I could always play music. For some reason, notes on a page made more sense to me than a bunch of crazy symbols
