The Twin Peaks (Music from the Limited Event Series) Blu-ray audio was at 96KHz, up from the usual 48KHz. Consequently the audio quality through a good quality audio system was superb, the best I have heard. By contrast, with CD being at 44.1KHz, I was disappointed by the audibly lower quality compared to the BR discs. I was also disappointed that Take Five from the Dave Brubeck Quartet was absent on this CD.