Using your smart speaker to play music is the top use for them. But making music choices useful has been a challenge. “Using voice to sift through and access music may be a relatively new idea, but it’s brought with it an immense technological challenge that streaming companies, record labels and machine-learning start-ups are all reckoning with. Proper use of this new interface and underlying metadata can mean the difference between sinking and staying afloat on the smart speaker medium.” – BBC