What is the difference of ballroomdance, hiphop dance, and street dance?

Hope you understood the scale of the song: E major

This is a very simple piece that anyone can try out. The peculiarity of this melody (in E major) is that 1st(ie, root note - E) and the 5th note(ie, the note B) on the scale are coveniently placed on the 1st & 2nd open strings on the guitar. This makes it very easy for accompanying a melody played on other strings in E major/ E minor. This piece in particular is simplified and requires movement in only one string(3rd string) which makes it apt and enjoyable for beginners.