The revolution is here. Witness gully rap rises from the streets of Mumbai to the biggest stage in the history of Indian hip-hop. This is an Amazon Prime Exclusive documentary on film Gully Boy's music launch and concert in mumbai. The revolution is here. Witness gully rap rises from the streets of Mumbai to the biggest stage in the history of Indian hip-hop. This is an Amazon Prime Exclusive documentary on film Gully Boy's music launch and concert in mumbai. The revolution is here. Witness gully rap rises from the streets of Mumbai to the biggest stage in the history of Indian hip-hop. This is an Amazon Prime Exclusive documentary on film Gully Boy's music launch and concert in mumbai. The revolution is here. Witness gully rap rises from the streets of Mumbai to the biggest stage in the history of Indian hip-hop. This is an Amazon Prime Exclusive documentary on film Gully Boy's music launch and concert in mumbai.