Chords below and above the staff

[Pekka Siponen]

> I'm not top posting.
In the notation reference: 2.7.2 Displaying chords,
is a snippet for a simple lead sheet:

<<
  \chords { c2 g:sus4 f e }
  \relative c'' {
    a4 e c8 e r4
    b2 c4( d)
  }
  \addlyrics { One day this shall be free __ }
>>

Why does the following shift the chords below the staff, and how can you get
them back up? This would be a welcome documentation subject.

\score {
\new Staff {
<<
  \chords { c2 g:sus4 f e }
  \relative c'' {
    a4 e c8 e r4
    b2 c4( d)
  }
  \addlyrics { One day this shall be free __ }
>>
}
}

I can't seem to find a way to get them up in anything more complicated than the
first example.

Greetings,
Pekka