shorter <code>x*</code>-named aliases. These are “piano chords,” i.e., based on the condensed, defining intervals.</li>
<li>Added <code>guitarChords</code> dataset containing several thousand formations of guitar chord voicings.</li>
<li>Added helper functions that use <code>guitarChords</code> for obtaining guitar chord information and mapping between different defining properties of a chord, most notably the addition of <code><a href="../reference/chord-mapping.html">gc_notes()</a></code> and <code><a