After unsuccessful search of how to 'Copy music files from Mac High Sierra to iPhone 8' which returned how to copy from phone to Mac, or PC to/from iPhone, I seek knowledge from the Experts.
I want to copy Music files (mp3, AAC,) from iTunes 12.7 to iPhone 8 Plus [iOS 11.12.1] iTunes. Most of the music was not purchased from iTunes - some is at least 25 years old.
I looked into AirMore+ - could not find suitable Mac version. And complains not finding my working my 50 Mbs WiFi connection.
I would really to copy/drag - n - drop all in 1 set, there are at least 350 selections (1.7 Gb in iTunes).