Antumbra

<p><em>The antumbra</em> (from Latin <em>ante</em>, "before") is the region from which an occluding body appears entirely within the disc of a light source. Most often associated with the sun and moon, an observer in the antumbra region would experience an <a href="https://en.wikipedia.org/wiki/Annular_eclipse" target="_blank">annular eclipse</a>, in which a bright ring is visible around the eclipsing body. If the observer moves closer to the light source, the apparent size of the occluding body increases until it causes a full umbra.</p> <p>The three movements (I - Suspended, II - Canon, III - Time) of this composition are a play on this phenomena, where the percussionists part mostly functions as an occluding body and the electronic track drifts and projects around the acoustic percussion like a light source responding to a solid object.</p> <h3>Work Details</h3> <p><strong>Year</strong>: 2022</p> <p><strong>Instrumentation</strong>: Vibraphone, glockenspiel, electronics.</p> <p><strong>Duration</strong>: 7 min.</p> <p><strong>Difficulty</strong>: Advanced</p> <p><strong>Contents note</strong>: I. Suspended -- II. Canon -- III. Time.</p> <p><strong>Commission note</strong>: Commissioned by <a href="https://www.australianmusiccentre.com.au/artist/edwardes-claire" target="_blank">Claire Edwardes</a>.</p>