Q: how to transfer music from my pc to my android phone?

It's a basic...  Easy on PC,  more difficult on a Mac

I have a Samsung Galaxy and I download Samsung kies soft

My galaxy appears on my PC files...  Transfert becoming easy

There must be the same thing with the other manufacturers

If you have a Mac,

If you have a sdcard on your Android device, use it

You can use software like Android file transfer for USB transfer or soft like airdroid