What noun or adjective describes a message/song/poem that is mournful, but intense?

In literature there is the term elegy (noun) or elegiac (adjective):

a sad poem or song : a poem or song that expresses sorrow for someone who is dead (M-W)

Yet it can be used by extension to describe 'woeful' situations without someone having died:

elegiac: wistfully mournful.

• She watched repeat serials, fixed on their moody and elegiac characterization.(OxfordL)

Edit: After your comment I thought of the adjective inconsolable which has some dynamic to it since whatever the person does, they cannot be consoled.

Harrowing is more extreme:

extremely upsetting because connected with suffering:

• a harrowing story (Cambridge)

For something more intense than mournful, perhaps:

After thinking about [some type of injustice] John moved those present with a heartrending song.

heartrending (adj.)

Causing great sadness or distress. Lexico

Causing intense sorrow or emotional anguish; evoking deep compassion; deeply distressing or moving. OED

Heartbreaking m-w