When you go and octave higher on the piano do you write it the same if you were an octave lower when you are composing a song?

Answer 1

While I do not understand your question, I will try to answer it! You have two clefts, the treble or G cleft and the bass of F cleft. (There are also special clefts which we will not get into.) Together they make up the Grand Staff. OK so far? Those are the notes you play. If the music is above or below the cleft, you will see ledger lines. Those are little lines above or below the cleft lines.

Now, Say the composer wants to use the notes at the top of the keyboard for some unknown reason. You will see a little 8 above the Treble cleft signature. That is telling you to shift up an octave. Then the bottom ledger line will no longer mean the E above middle C but the E one octave above that.

If you look at a lot of choral music, you will see an 8 below the Treble Cleft Signature on the tenor line. That means the tenors should sing the same notes as the Treble Cleft only one octave lower.

You could even put a 16 under the Bass Cleft Signature if you were writing music for a 5 string double bass. It can reach the lowest note on the piano. How else would you indicate it? Can you imagine the ledger lines? I would get confused!