This is one of the most extraordinary albums of the year - a gloriously uplifting set from surely the most disadvantaged musicians on the planet. Kinshasa, capital of the Democratic Republic of the Congo, is a rough city, and life is all the harsher for those who are disabled or homeless. Staff Benda Bilili are a group of polio victims and abandoned children who live in or around the grounds of the Kinshasa zoo, and have eked out a living performing on the streets. Their songs are lyrical, thoughtful, remarkably cheerful and occasionally startling, thanks to the virtuoso solos performed by 17-year-old Roger Landu on an instrument he built himself from a tin can, a piece of wood and one guitar string. His wailing, edgy playing is matched against the soulful vocals and guitar work of the children, who perform from customised tricycles. They are influenced by the classic rumba of the Congolese guitar hero Franco and by the funk of James Brown. These young people deserve to become celebrities - and that could happen. Film-makers Florent de la Tullaye and Renaud Barret are working on a film about the band, and there are plans to bring them to Europe in the next few months. So let's hope they are granted the visas denied to several other Congolese musicians.