Go to Settings > Notes > Password. Tap Reset Password. Enter your Apple ID password. Then tap Reset Password again. Enter your new password and password hint.
Try connecting to the network with another device that hasn't been connected yet. If you don't have another device, search through your history for the TOS page or wait for...
Try logging in one more time. If it still does not work, try resetting your password once more. If it still doesn't work, then reboot you computer. Then it should...
Note where middle C is on both clefs (for viola it's the center of the staff, piano treble clef it's the first ledger line below the bottom of the staff....