There are thousands of blogs out there -always check the real-life credentials of bloggers before treating anything they say as authoritative.
A number of broadcasters make content available on the Internet. Some of it was born digitally (i.e. specially for the Internet); other content is an online version of something that has been broadcast terrestrially.
Here are just a couple of examples:
JISC's mission is to provide world-class leadership in the innovative use of Information and Communications Technology to support education, research and institutional effectiveness.
It has a number of digitisation projects, both completed and on-going,and those most relevant to Music are listed below. You may, however, be interested in other JISC projects, and a full list of all current projects is also provided.