I found the resources at CHARM fascinating as I have an interest in the evolution of recorded sound and how that has worked to change performing styles.
The ISGM provides competently recorded professional performances of chamber repertoire (mostly classical/romantic eras) for download and in their biweekly podcast. Some well-known performers.
Remember that a professional musician at the start of a career now has to compete with 100 years of recorded material, all potentially simultaneously available!
http://www.charm.rhul.ac.uk/studies/chapters/intro.html
The ISGM provides competently recorded professional performances of chamber repertoire (mostly classical/romantic eras) for download and in their biweekly podcast. Some well-known performers.
Remember that a professional musician at the start of a career now has to compete with 100 years of recorded material, all potentially simultaneously available!