Complex sentence: The band is the subject of the documentary film, "Sleepwalking Through the Mekong", chronicling its visit to Phnom Penh, Cambodia, during the Bon Om Thook water festival in 2005.
Split into simpler sentences: The band is the subject of the documentary film, "Sleepwalking Through the Mekong". The film chronicles the bands visit to Phnom Penh, Cambodia, during the Bon Om Thook water festival in 2005.