Without the lyrics i'm taking a shot in the dark here. If it's the song made famous by louis armstrong. It's a new rendition of a classic song of how pleasant life in america was in the 40s and 50s. It's about exactly what the title says, what a wonderful world we lived in back then " I see leaves of green/ skys of blue/ children laughing / red roses too/ and I say to myself/ what a wonderful world." ray charles also had sucess with it