I want to know the answer to the following question:
How is translation of sung texts different than translations of poetry?
All the background I'm provided with is that "There is the option in prose sung texts, less so in verse, of adding or deleting a syllable here and there by subdividing or combining notes, respectively, but even with prose the process is almost like strict verse translation because of the need to stick as closely as possible to the original prosody of the sung melodic line.". Is that enough to answer the question?
Answer: no