This is a new deleted song for King Triton that was recorded but dropped for the live-action movie adaptation, and uses some of the familiar music from the original animated film's "The Storm" sequence. Although it would've given some insight on Triton's point of view and frustration with Ariel, it does make more sense for the reveal of Triton's emotional change to happen later on, as it does in the final film.
Ariel, you impossible child
This is an ocean too far
Ariel, you impossible child
I'll find you wherever you are
All my fears
My warnings all these years
Don't say goodbye, answer me, please
Are you lost or is this all my fault?
Ariel, I will scour the seas
'Til there's nothing but coral and salt
Hold my crown
I'll tear the shoreline down
Run every ship aground
'Til they've drowned and I've found you
In trying to protect you
I pushed you away
Stay, impossible child
Impossible child
How can I go on if my youngest wandering
Daughter is gone?
Impossiblе, impossible