Muzik's smart headphones are set to arrive this spring, and the company is looking for more apps to integrate with its newfangled cans. Thanks to a hand from Microsoft, Muzik launched an SDK for Windows 10, iOS and Android that will allow apps and services to make use of the headphones' smart keys. Muzik already announced the audio gear would allow to you share what you're listening to via social networks, and the folks at Microsoft used the SDK to allow sharing to Slack as well.