Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1750/_.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-44104-_.abc 138 ABC music file with the extracted tune(s)
Tune-44104-_.txt 138 Plain-text file with the extracted tune(s)
Tune-44104-get.log 6217 Log file, useful mostly for debugging
These files should be available for 24 hours.