<?xml version="1.0"?>
<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E67">Th45</font></span>: <a NAME="T56"><span class="comment"><font color="firebrick">:: MUSIC_S1:56</font></span><br/></a><div class="add"> <a href="music_s1.html#K43" title="MUSIC_S1:func.43">REAL_Music</a>  is  <a href="music_s1.html#V14" title="MUSIC_S1:attr.14">classical_octave</a> </div></div>
