Is the music / information on sub accounts for a family plan private from one another?

[EgginEgginEggin]

Looking to save some money by merging individual accounts into a family plan, but don't necessarily want to see other people's music, nor would i want them to see mine necessarily... just a privacy thing. I assume that no one can freely look at the other people on the same account unless by a normal search of a play list / their profile... but was just curious before offering this out. Mainly, i won't want music that i listen to (which can inappropriate for certain ears) to be easily accessible.