 Unlike most medleys, which typically used sections of individual songs presented sequentially with brief transitions between them, the "Jack Mix" series took a different approach, layering elements of different songs to produce a dense montage effect similar to a mashup.Despite being reliant entirely on medleys of other people's material, Mirage was one of the most successful house acts in 1987–8, placing several more singles on the charts, including the number eight hit "Jack Mix IV".Several TV advertised albums also charted, with the most successful being "Jack Mix '88" (actually released in 1987) and "Jack Mix in Full Effect", both of which reached number 7.