I heard the song many times and tried to understand the meaning, the story in the song. The song is about a monkey who is presently living in city zoo and cherishing his memories of past life in jungle. He compares his free, happy days of jungle life and bored monotonous present life in the zoo. He is also telling story about his family members from the same cage.
In this song there is ‘one protagonist’ telling the story and ‘twelve monkey’ characters that are family. I took a print out of the lyrics of the song and tried to visualize the song and made some notes on the page itself.