Default [Q] Port Touchwiz apps?

How can I port the Galaxy S4 Music Player app to Nexus 4? I've heard it wouldn't be possible because it requires a TouchWiz ROM. On the other hand, I've heard too it could be possible if I edited the apk and it's TouchWiz requirement, as is shown here . I've tried this tutorial with no success. Can a TouchWiz app really be ported?