- \relative c' {
-
- %% by hand:
- \once\override Stem #'stencil = #Balloon_interface::print
- \once\override Stem #'original-stencil = #Stem::print
- \once\override Stem #'balloon-text = #"I'm a stem"
- \once\override Stem #'balloon-text-offset = #'(3 . 4)
- \once\override Stem #'balloon-text-props
- = #'((font-family . roman))