I recently bought myself an SD card for storing music since S4 only got 8GB internal memory. And I found out that I need to transfer the music from Internal Storage to SDCard manually [I download music using tubemate fyi]. So I plug my s4 to my computer, cut my music folder from the phone, and paste it to my SD card, creating a new folder. After I did that, the stock music application can't detect any of the music I put in my SD card, even after putting the music back to internal storage. But strangely it detect music that I just download, and the music that I just download is in the same folder as the rest of my music. Any idea how to fix this ? Thanks in advance. I already tried RescanSD and Rescan Media, 3rd party apps, and still can't detect my older music.