A Muse headset is just one kind of EEG device that can be used to map or visualise brainwaves primarily as a biofeedback device for meditation and relaxation. It could also be used to control midi based on the brainwaves of the person wearing the headband. Various Bitwig instruments could be built around this.
For those without limbs, or too lazy to use them, this would allow for the control of Bitwig instruments through control of brainwaves. It would also allow for interesting live experiments where the musician wears the headset creating live biofeedback as a sonic element in a performance.
There’s a patch for Max/MSP for this: GitHub - amlal/MaxMSP_EEG_Routing: Custom Max MSP package to route data from Neurosky Mindwave Mobile, Emotiv Epoc and Muse headsets into Max. Bitwig could make this kind of future music making more accessible.
There’s a library here to build APIs: https://brainflow.org/
No. Only the patch for Max/MSP mentioned above.
Muse official product page: