Conia

An octave is from one note to the next note with the same letter, just higher/lower. For example, an octave would be from middle C to 5C (or seven notes higher). An octave has eight notes in total. Once you get past eight notes, you're in a different octave. As for the #+letter thing, the # is to count(?) how many times the letter shows up so it can be identified from the others (since shee...