:fields '(&quot;name&quot; &quot;analysis&quot;)
          :descriptors '(&quot;rhythm.bpm&quot;
                 &quot;lowlevel.mfcc.min&quot;
                 &quot;lowlevel.spectral_centroid.mean&quot;
                 &quot;tonal.hpcp_entropy.var&quot;)))</code></pre> <p>Prints:</p> <pre><code>name:          120 bpm distorded drum loop
analysis:      lowlevel:      spectral_cent: mean:          1313.7423
                              mfcc:          min:           (-1011.6488
                            