Thanks for the reply. I thought I might be able to extract the music fro a previous hard drive on which I had backed up that iPhone 4 but so far I have not been able to do that. It would be a shame to have to rip my own CDs again just because I trusted Apple and iTunes to be around forever. I see that I can easily get my photos off this old iPhone. But the music doesn't even appear anywhere in a directory -- even blocked -- when I connect that phone to my current Windows 10 laptop. and yet it still plays the the first day.
When I search the topic, I see a lot of ads for third-party software that claims to be able to access and extract the music. I just know know that I trust any of it.
Thanks again for reaching out, even with a disappointing answer.