The song is 'laden with' meaning and feeling. [=the song has/carries a lot of meaning and feeling]
a richly/heavily 'laden' buffet table [=a buffet table on which there is a large amount of food]
His voice was heavily 'laden with' sarcasm. [=his voice was very sarcastic]
(..) of the Alps were carved by those great mountain sculptors - the glaciers. Immense rivers of moving ice, laden with rock, grind their way down the mountains, gouging out deep valleys. They're the most powerful erosive force on our planet. (..)2006 TvShow: Planet Earth Title: Mountains Season: 1 Episode 2