Well, your gift for music is enough for 1,000,000,000 people, so it's all good

1. go to the start menu. You can do this by pressing ctrl + Esc, or by click the icon on the bottom lefthand corner
2. Click on Control Panel
3. Inside control panel, there should be a big link saying "Clock, Language, and Region".
Under it, there should be a "Change keyboards or other input methods". Click on it.
4. You should automatically be in the 3rd tab, "Keyboards and languages". If you're not, change to it. If you are, click on the "
Change Keyboards..." button.
5. Click the "Add" button, pick whichever languages you need, add them (if you don't know which ones to tick, just tick all of them. Normally for Japanese I use Microsoft IME and Japanese). Click Okay and then click Okay again, and you're done
