You can manage your *Musicnotes account email address, password, billing information and other account details by visiting the "My Account" link at the top of any page of the Musicnotes web site.
Sign in if you're not already, then click on the account setting you would like to change. You can edit your personal information there.
Or, use these direct links:
*Please note: these instructions are for changing the email address on your Musicnotes account only. If you are part of the Rewards Program, you must contact Customer Support to have your email address changed.