It’s a classic techno song that might be described as EuroTrance. I think I’ve heard the song but I’m asking for a friend. It’s possible it might be an instance of the Mandela effect because the song can’t be found anywhere.
Could it be Underwater Love by Smoke City?
That has the lyric, "After the rain comes sun, after the sun comes rain again’
It’s quite downtempo though so possibly not. Or maybe a remix?
Possible misheard lyrics to Mika - Rain?
Maybe Here comes the rain again?
I’d guess the more famous original from the '80s by the Eurythmics.
Probably not it, but that immediately makes me think of ‘here comes the rain again, falling from the stars. Here comes my pain again, becoming who we are.’ from Wake Me Up When September Ends (Green Day)
More like put me to sleep when September starts, I hate school.