 Right at the start of the century the paper-roll playing mechanisms of the pianola were incorporated into residence organs, which had the side-effect of eliminating the profession of residence organist, requiring the operator to do no more than operate the organ stops and expression pedals (which, in its turn, was eliminated within a decade, that too being encoded onto the paper roll itself).Residence organs in the 1930s grew to encompass an even wider range of instruments with the advent of the electronic organ and (later) the analogue synthesizer as home organs.There has been a "purist" backlash against these; and even today one can find companies that will build "real" (i.e.