I just paid today for an annual subscription, but under Account it says it expires in one month.

I just paid today for an annual subscription, but under Account it says it expires in one month.

OnSong Premium accounts offer a one-month free trial when you first sign up.  The expiration date indicates the date and time when you will first be charged for a premium account.  At that time, the expiration date should be updated to reflect the new one-year expiration.