موسیقی fans, I need your help)

I'm from Latvia. In school we need to present our class song. Something like hymn. I need beautiful melody, which are popular. For example.. "We are the world" سے طرف کی Michael Jackson یا "Wind of change" سے طرف کی Scorpions. Words doesn't meter, I will rewrite them on my language. I ask for advice - which amazing songs do آپ know? Beautiful melodies, not fast.. I need your help!