I've always thought it was weird that the interval of a half-step is called minor 2nd.. If you take the name of any other interval, it describes the distance between that step of the scale, and its root note. For example, a major 3rd is the distance between the root and 3rd of a major scale, a minor 7th is the distance between the root and 7th of a minor scale, and a perfect 5th is the distance between the root and 5th of both a major and minor scale. So why isn't a minor second called a diminished 2nd, and a major 2nd called a perfect 2nd? Any thoughts? It's just something that's always bugged me. I wonder if anyone here knows the history of how the intervals were named.