octave

His three-octave falsetto was also used to good advantage in Mars Attacks!

I played up one octave, and then I wished to go on by placing my first finger on F sharp.

An octave coupler without such extension is incomplete and is no more honest than a stop which only goes down to Tenor C.

Not only did he provide sub-octave and super-octave couplers freely, but he even added a Swell Sub-quint to Great coupler!

Closing the holes again and blowing harder, we get the scale an octave higher.

If two notes at an interval of a fifth are held down, a note one octave below the lower one will be heard.