A:AnswerStoring music is far, far less demanding and this is a waste for music. This card is for tasks that require super fast write ability like photo and 4k video recording. So yes, it can store music just like a Ferrari can idle through a parking lot.
A:AnswerThe cards physically have more pins/contacts thus allowing a faster read/write rate but your device must support the additional pins. The higher end Nikon DSLRs with SD slots such as the D500 support UHS-II. Check your device manual for UHS-II support or check the device website.