Answer:
We at Singa of course want to time all of the lyrics, including “ooh ohs” or ”la las”, as accurately as we can but unfortunately very often the AI will get them wrong and require manual correcting from our lyric editors.
When fixing them, we suggest writing them out as simple as possible to save time, and remember that you can copy-paste multiple regions/full lines if needed. When in doubt, always think about how does it feel to sing with the lyrics.
Example:
Not necessary / doesn't look good:
Simplified clean look:

