Open records allow oversight. Closed records invite corruption and abuse. Sunshine is a good disinfectant.
Unfortunately, IMHO, open records laws can be abused also. My state is a good example: our local newspaper has published a link that allows access to the concealed carry permit database. The public has a "right to know" if a neighbor or co-worker carries a concealed weapon. That link also identified address and age of the permit holder too, until the link was modified.
As in the 911 tape discussion, and in my case the CCW permit issue, I just don't see how anyone's rights are protected by publishing this information - - but I do feel my right to privacy ("peaceful enjoyment") is bruised.
[by the way, I'll argue that HIPAA probably does not apply to 911 calls themselves even if a jurisdiction has ruled that the 911 employees, etc. SHALL comply with HIPAA. If you want a thrilling read, read the HIPAA privacy and security regulations themselves--- not some department or health facility lawyer's interpretation of such. I'm the "HIPAA Compliance Officer" in our practice (I missed a meeting and got elected)] But excuse my digression.