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psu_13

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Posts posted by psu_13

  1. Real CDs encode the data as physical pits in the media, which will theoretically last a long time.

    CDR and other recordable media encode the data using, among other things, colored dyes in the data layer. These dyes are light sensitive and will tend to fade over time, so you don't expect CDR media to last as long.

    These days I copy most of my disks to my computer and then make multiple backups ... before I did this the only "real" CDs that I ever bought that failed were from the Mosaic Art Blakey set, which apparently had some kind of widespread manufacturing problem because I've even tried to buy second copies of that set ... and those disks were bad too.

     

  2. Bruckner is something of a hobby of mine.

    I have Bohm (3,4), Eichhorn (various), Jochum (1-9), Skrowaczewski (1-9), Klemperer (various), Wand (9), Horenstein (8,9) ...

    and more recently I've enjoyed Manfred Honeck's Bruckner with the local Pittsburgh Symphony, and his recordings with the same band are good too. 

  3. The recordings themselves do not have to disappear. All that has to disappear is the license to allow the service to keep the tracks on the service.

    I've been using Apple Music for a couple of years now and have had 2 or 3 albums just outright become unplayable and have also had various other songs move around or go away mysteriously because the licensing changed. I think 25% might be a high guess, but 10% is not out of the question. IMHO.

     

  4. 14 hours ago, Jay said:

    Would you please provide more information about this?  I've been collecting CDs since the mid 80s and I've never had a failure.  I read about some European CDs were affected by rot but certainly not Mosaics.

    The one I remember best is the Mosaic Art Blakey set. This set had some production issues, I gather, that made one or two of the CDs in the set go bad. I have seen multiple copies of this set where disk 1 or 2 is just not readable, including the one I bought back in the day. Luckily I already had a lossless copy of this when I discovered that the disks had gone bad.

    I've had some other CDs look like the have delaminated or at least changed color on the data side. But they were still readable so I made rips of them that appear to be OK.

    In general my assumption is that retail CDs will not be that permanent, and having rips and multiple copies of the data is probably a  good idea. CD-R is even less so, since it depends on dyes that will certainly fade over time.

    FWIW there does exist software that attempts to make a "bit perfect" copy of the CD and estimates how well it does using checksums collected on the Internet from other users who ripped copies of the same recordings. You can use this to figure out if old disks that you suspect may have gone bad actually have gone bad. 😃 

  5. I've lost much more music because I lost the physical media than I have ever lost music on my various hard drives. I've also had a few CDs (including irreplaceable things, like Mosaic sets) just rot while they sat in a box and become unreadable.

    Yes you have to have a fairly disciplined scheme for backups and making new copies. But you had to do that anyway if you use computers regularly for anything important.

    Cloud backup services like Backblaze are also handy.

    I would advise not thinking of your iTunes cloud catalog as a "backup". Those files only exist as long as Apple has the right licenses, and can disappear unexpectedly if things get pulled.

     

  6. I've been buying records from Mosaic since the original Blue Note Monk set in the early 90s (late 80s?).

    I will probably buy records from Mosaic until they shut down.

    Would I like their shipping and logistics to be better? Sure. Do I understand why it's not? Sure. Would they probably be in better shape if somehow they could instantly fix it at no cost in either money or time? Probably. Will this change the fact that I will probably buy records from Mosaic until they shut down? No.

    Your opinions and milage may vary.

    I don't really understand why we are still talking about this, except to the extent that a lot of people on Internet Forums need to keep talking until they think that everyone else thinks that they are Right (tm).

     

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