en_tn/job/30/30.md

my bones are burned with heat

Here "bones" refers to the whole body, which suffers from fever. (See: rc://en/ta/man/translate/figs-synecdoche)

my harp is tuned for songs of mourning

Here "my harp" represents Job himself, and also represents his desire to sing only songs of mourning. AT: "I play only songs of mourning on my harp" (See: rc://en/ta/man/translate/figs-metonymy)

my flute for the singing of those who wail

Here "my flute" represents Job himself, and also his desire to sing only songs of crying. AT: "I play only songs of wailing on my flute" (See: rc://en/ta/man/translate/figs-metonymy)

wail

To wail is to cry very loudly because of terrible sadness or pain.