Baseline shortcut key on note gone?

Go to : System Preferences > Keyboard > Shortcuts > App Shortcuts :

Click the + box

From the Drop down box, toggle : Application, you should get a list of all the applications installed on your computer,

find & select Notes.app

In Menu Title : type the name of the shortcut you want to add, making sure you type it exactly as it appears in the

menu bar drop down for the application you wish to add the shortcut to.

In Keyboard Shortcut, type the keyboard combination you want to use, this may need some trouble shooting as the

combination you want to use may be reserved for another function.

(Option-Command-M does work for this shortcut)

Click Add :

If successful you should now see this :

& from the Notes.app Menu bar > Format > Font > Baseline > Superscript, with you new keyboard shortcut.

You can assign your own Keyboard shortcuts :

OS X Yosemite: Create keyboard shortcuts for apps

Also works on OS X El Capitan.