The following two years were spent by the group traveling and archiving source material for their follow-up, One Colour Just Reflects Another, which utilized field recordings from excursions to Mexico, Central America, the Middle East, and the Andalusian mountains (where Mould played with and recorded Gypsies, smugglers, thieves, and revolutionaries). Combining those source tapes with hip-hop beats, percussion, and instrumental tracks recorded in the studio, and vocal and spoken snippets, the group fashioned a unique, signature blend attracting fans of Latin jazz and world music as often as club heads familiar with the more standard Ninja Tune fare. One year later, 1997's Light 'Em Up, Blow 'Em Out saw them incorporating a similarly beguiling array of influences.
Continually refining their modus operandi, Ein and Mould not only visited Cuba but invited a music legend, flutist Richard Egües, to lead sessions for 2000's Rebel Radio: Master Sessions, Vol. 1 (which featured an accompanying book as well). A follow-up, Master Sessions, Vol. 2, appeared one year later, and Up, Bustle and Out continued to unveil works sourced in exotic locales including Jamaica (Urban Evacuation, City Breakers: 18 Frames Per Second), Mexico (Mexican Sessions), and Turkey. In addition to their work as Up, Bustle and Out, Ein and Mould also involved themselves in solo projects extending well beyond the boundaries of their combined effort. (Mould performs with a traditional Andean flute group, while Ein is a studio producer and engineer, also recording club tracks under a number of different names.) ~ Sean Cooper & John Bush, Rovi