iTunes Windows - How to remove music list on device?

Cheers for reply, turingtest2. I've followed the advise in that link, which is how I usually remove music from iPhone if I want to start again dragging and dropping albums back to the iPhone. Usually works, occasionally I get the issue where a list of music is left behind in iTunes > Devices > iPhone > Music.

May have to go the backup > restore iPhone route. Bit of a rigmoral but maybe it will be okay once I've done this. The list did clear previously. But not sure if it was something I managed to do or it just sorted itself out.

The other option, the way I used to transfer iTunes music to iPhone, is to go to iTunes > click on iPhone from top/left of menu bar > Music > then select individual albums I want to transfer then 'Sync' Was okay when library was small. As it's grown this way has become more and more tedious. Anyway, whatever works with iTunes on Windows I guess!! :-/

Thought I'd try deleting the iPhone back-up from iTunes, which then showed 'this device has never been backed-up to this computer'. Did a full back-up again ........... device > Music list still the same!! :-/ Okay, will try the back-up > full iPhone reset > restore from back-up. Last option at this stage.