וַיְהִ֣י לְ֭אֵבֶל כִּנֹּרִ֑י וְ֝עֻגָבִ֗י לְק֣וֹל בֹּכִֽים׃
Therefore is my harp turned to mourning, And my pipe into the voice of them that weep.
Read Kabbalistic (mystical) interpretations of Job 30:31: Zohar and classical Jewish mystical sources, free online.