Just bought my first Android phone, a Moto G. I have a google account, mostly to use google drive and google music player but it won't let me sign in because it's not linked to a gmail account but my own personal email account. Even the music player won't link up to my existing account. What gives? Does that mean I've got to upload 10,000 songs all over again to the gmail account? Surely there must be a workaround??