Song: Feel Good inc.
"Feel Good Inc." is a song by Gorillaz, on their album Demon Days, featuring De La Soul. The song was released as the lead single from the album on 9 May 2005 in the United Kingdom (see 2005 in British music). "Feel Good Inc." peaked at #2 in the United Kingdom and #14 in the United States, at the time the band's highest positions... Source: Wikipedia
Every single Gorillaz song consist's of a cartoon look, all the band members have their own drawn monkeys.
At the start of this songs the main singer appears to be trapped in a cage or prison. This is shown by him holding onto the bars at the window as he sings along to the words.