We know that we can separate the lyrics with round brackets - as listed here and in the wiki - according to individual sections such as (chorus), (prechorus), (break) etc. and that these are very likely to be interpreted differently. Since I accidentally mistyped something in round brackels, I noticed that Suno sings regular words in round brackets like a chorus / choir (depending on the genre), for example, something like that gives me an extremely good result:
set me free!
set me free!
(free)
(free)
I've been using it in every song since then, depending on the genre it's sung differently in brackets, sometimes whispered, sometimes dipped in reverb, it brings in a lot of variety for me. And the best thing is that it almost always works ;) It may have been mentioned before, but I love this effect.
In order not to make a promo, I made two examples with different interpretations of this lyric prompt: