808 showcases conversations with some of the giants of hip-hop and pop music production to find out why the device has been so important. This isn’t a film about an obscure music tool. The Roland TR-808 was one of the most powerful pieces of music technology to ever hit the business. And its sound continues to reverberate today.

from Mashable

Allow applications downloaded from anywhere in macOS Sierra

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For security reasons Apple removed the option to allow downloaded apps from anywhere on Mac OS Sierra, to be able to enable it just run the following on your terminal:
sudo spctl --master-disable
Be aware that this completely disables Gatekeeper, so you should enable it back once the unverified app is running:
sudo spctl --master-enable