Copy music files from Mac High Sierra to iPhone 8

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).
MARSPATHRetired EE/Computers/ITAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Jackie ManIT ManagerCommented:
You need to add the music files to your iTunes library in your Mac first and sync the music files to your iPhone 8 Plus afterwards.

No drag and drop is available. You can only drag and drop music files to an Android phone.
Eoin OSullivanConsultantCommented:
To load ALL music into iTunes (mp3, aac etc) .. the iTunes application on OSX is all you'll need
Step 1 .. Open iTunes and connect the iPhone to the Mac
Step 2 .. In the VIEW Menu at the top of the screen ensure that SHOW SIDEBAR is clicked to make it easier to see your device
Step 3 .. Select the iPhone under the Device button and go to the Music section, click the SYNC MUSIC checkbox and you can then opt to copy ALL music or just specific Playlists/Artists/Albums
Step 4 .. Press SYNC button to copy all that music your device

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
MARSPATHRetired EE/Computers/ITAuthor Commented:
Good to Go, Thanks
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.