the first of marot's signings was colourbox, an english electronic musical group signed to the 4ad label. in 1987 colourbox joined forces with a.r. kane and recorded "pump up the volume" under the name m/a/r/r/s. the song was noted for being one of the first to be constructed almost entirely from samples from other records. "pump up the volume" was marot's first international number 1 single, charting in the top position in 5 countries and in the top ten in a further 6. it went on to sell well over 1 million singles worldwide.