Tužno moje leto, gde je ona sada / Može da zaluta kao jagnje malo

The song you are referring to is titled (Sad Summer), one of the most iconic songs by the legendary Serbian "bohemian" singer-songwriter Toma Zdravković . Song Overview and Review

I traded grey autumn for summer / So I curse the sea and that sad summer.

A ja sivu jesen zamenih za leto / Pa proklinjem more i to tužno leto

You can find the full song on the Toma Zdravković Official YouTube Channel or listen to it on Apple Music . Toma Zdravković – Tužno leto Lyrics - Genius

: The song explores the passage of time and the lingering pain of a summer romance that ended with the season. It captures a profound sense of nostalgia , heartbreak , and longing as the narrator waits in vain for a lost love while the weather turns cold.