Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/i_cant_get_started.abc/jazz" 
Server: Apache/2.4.33 (Unix) LibreSSL/2.2.7 PHP/7.1.33
Content-Length: 240
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /~jc/music/book/i_cant_get_started.abc/jazz was not found on this server.</p>
</body></html>
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Coll_9861.log 1636469 Log file, useful mostly for debugging
Coll_98610.log 2080212 Log file, useful mostly for debugging
Coll_98613.log 3131123 Log file, useful mostly for debugging
Coll_98615.log 470157 Log file, useful mostly for debugging
Coll_98618.log 1905056 Log file, useful mostly for debugging
Coll_98619.log 477082 Log file, useful mostly for debugging
Tune-9861-get.log 7054 Log file, useful mostly for debugging
Tune-9861-jazz.abc 359 ABC music file with the extracted tune(s)
Tune-9861-jazz.txt 359 Plain-text file with the extracted tune(s)
Tune-98610-get.log 4345 Log file, useful mostly for debugging
Tune-98612-get.log 4341 Log file, useful mostly for debugging
Tune-98613-get.log 1388 Log file, useful mostly for debugging
Tune-98615-get.log 9609 Log file, useful mostly for debugging
Tune-98617-get.log 1456 Log file, useful mostly for debugging
Tune-98618-get.log 4264 Log file, useful mostly for debugging
Tune-98619-get.log 5187 Log file, useful mostly for debugging
These files should be available for 24 hours.