10 synths that defined dance music

How brave are we to try and pick just 10 synths that defined dance music from all the synths ever created, in both hardware or software? The fact is, though, that there have been some truly iconic synths released over the last 40 years of dance music that really have defined its history. Some might simply have contributed to the success of certain genres, while others might have created genres but, whatever the impact, the following machines really have undoubtedly made dance history.....