This track is a spontaneous improvisation for solo chelys (tortoise shell form) replica ancient Greek lyre, in the ancient Greek Chromatic Phrygian Mode (equivalent intervals as DEFG#ABCD) - this unsettling mode can also be heard in an actual surviving fragment of written music from ancient Greece, in a dramatic fragment from Ajax, known as "Tecmessa's Lament": https://www.youtube.com/watch?v=oA4-NNKTMsw