'A <a href="http://www.j-archive.com/media/2004-05-19_DJ_18.wmv">pipe</a>'s pitch is related to its length; compared to an eight-footer, a four-footer sounds the same note at this interval'
an octave
THE PIPE ORGAN: A pipes pitch is related to its length; compared to an eight-footer, a four-footer sounds the same note at this interval
A pipe's pitch is related to its length; compared to an eight-footer, a four-footer sounds the same note at this interval
A pipe's pitch is related to its length; compared to an eight-footer, a four-footer sounds the same note at this interval
THE PIPE ORGAN
an octave
THE PIPE ORGAN