The soul-stirring spirit of song and the resolve to rise above desperate poverty are the backbone of this amazing documentary about Staff Benda Bilili, a Congolese music group comprising of street kids and paraplegic polio victims. Hardly a slick ensemble, they begin rehearsing outdoors - in the Kinshasa Zoo! - with rusty old instruments and reclaimed rubbish. One able-bodied youngster fashions his own unique "lute" from an empty milk container, a hunk of wood and a single, tightly-wound string. Don't laugh: the kid wails on that mono-string with the intensity of Jimi Hendrix. After years of struggling for funds and studio time, they finally record their debut album, and - amazing but true - the band ultimately becomes a massive hit on a European tour. "A man's life is never over, luck shows up unannounced... I know we'll succeed someday," goes a lyric in one funky soukous number, and this project - which began as a general documentary about African music - demonstrates that notion in clear, vibrant rhythms.