Copying Music and Video from your iPhone, iPod, or iPad to iTunes or Computer
With TouchCopy it's easy to copy your music to your computer and even directly into your iTunes library (or Music app library on macOS Catalina or higher).
Start with your iPod or iPhone disconnected from your computer and iTunes closed.
Step 1. Download and Install TouchCopy.
Step 2. Start up TouchCopy by double-clicking the TouchCopy icon on your desktop, or finding it in the relevant folder.
Step 3. Connect your iPhone, iPod, or iPad to your computer using a USB cable. You can also connect your iOS device to TouchCopy over WiFi as detailed here.
Step 4. If you have purchased TouchCopy, enter your activation code to access the full unrestricted version
TouchCopy may automatically open iTunes - don't worry, TouchCopy has fixed it so that your computer will not automatically sync with your device while TouchCopy is running. These changes are restored when you quit TouchCopy.
Copying Music into iTunes (or the Music app on macOS Catalina)

You can now select which songs you want to copy into your music library. If you want to select all your music, select "Music" from the list on the left and click on "Copy to iTunes"(PC) or "Copy to Music"(macOS Catalina or higher) button in the TouchCopy control bar.
If you want to select a subset of your music collection to copy, browse your music using the Genre, Artist and Album lists and then click the Copy button to transfer only your selected music.
Note that if you're running the trial of TouchCopy you will be limited to 100 copies maximum.