Rhapsodist

In ancient Greece, rhapsodes went from town-to-town reciting or declaiming the poetry composed by others, mainly the epics which were considered sacred.

They are to be distinguished from the aedes who composed the works and could also recited them accompanying themselves on a musical instrument.

Sri Aurobindo is thus referring here to an immortal voice in Being that proclaims eternal Truths.

Indeed, this verse relates to the Divine Being and its sacred power which attempts to manifest itself to us in different ways: touching the Truth, seeing the Truth, and in this verse, hearing the Truth.