1. Although the notes go up and down in pitch at the right places, they sometimes jump a little too far and sometimes don’t jump quite far enough. This is how most of us sing (which is why we should stick to our day jobs).2. The note she started on was not the same note that Abba started on. In fact, the note she started on doesn’t appear anywhere on a piano keyboard (why should it?). It’s just some note she picked from the middle of her vocal range and, if you checked, you would find that it was somewhere between two adjacent notes on a piano. Once again, this is what most of us do.