Harry Potter – The John Williams Soundtrack Collection

The initial pressings of CDs 6 and 7 (specifically parts of tracks 6.4, 6.13, 7.2, 7.4, 7.14 and 7.26) had a technical issue where some audio data was missing in the upper frequencies. This was corrected in later pressings.

Producer Mike Matessino commented:
> This situation arose because some sections of the score were inadequate or not present on the high resolution masters that served as the primary element for the presentation. Those needed to be filled in from the soundtrack album, for which two elements were provided: a 1630 44k album master and a 48k DAT tape (those numbers refer to sample rates). The former was used for unchanged tracks like “Double Trouble,” and the latter was used when album material had to be combined with the hi-resolution data. Mathematically it made more sense to use the DAT in those instances. I had no reason to question the DAT’s quality, but it seems now that the tape was made for the AOL advance streaming presentation of the album. Nothing on the tape indicated this and the audio was not compressed or “lossy,” it simply had a frequency curve applied in order to minimize artifacting when streaming.

> For those who would feel mentally eased by having tracks that are mathematically the same as the 2004 CD, corrections have been made using the 1630 soundtrack master. As I have now decided to run a live spectrograph throughout my work process, I do not expect this issue to come up again. Sadly, elements have proven to be untrustworthy and even more diligence will be applied going forward.

Source: https://web.archive.org/web/20250110135318/https://www.jwfan.com/forums/index.php?/topic/37156-intrada-dinosuar-end-credits-discussion/