London Undersound is the eighth studio album by the multi-talented musician Nitin Sawhney. Supported by a truly amazing list of guest stars including Sir Paul McCartney, Imogen Heap, Spanish fusion sensations Ojos de Brujo and Anoushka Shankar, Nitin Sawhney has solidified his international reputation as a driving force in thought-provoking, progressive, alternative sounds. This digital DJ sampler includes "Last Train To Midnight," a heavy, dubstep number that features sounds and rhythms of the tube system and singer Aruba Red. Built around a drum and bass track in an unusual 6/8 time signature, "Bring It Home" featuring Imogen Heap, has a distinctly celebratory tone, while "Shadowland" is an instrumental track (with voices used as an instrument) with Ojos De Brujo, the nine-piece band from Barcelona. According to Sawhney, it works really well when he is DJ-ing in clubs. Although, he is quick to point out that this is not a club album but a multicultural urban masterpiece that reflects contemporary London's everchanging heartbeat.