increase space between multiple songs

[Sebastian Menge]

Hello

Im writing a small songbook at the moment. It consists of multiple
\scores I include. Each has a header as follows:

\header {
  title = ""
  arranger = ""
  subtitle = "title of the song"
}

The whole book has a "normal" header with title and arranger set and a
section  " \paper{ printallheaders=##t  } "

Is this the right way to do it?

And the specific question: How can I increase the vertical space
between song #1 with four stanzas and the subtitle of song #2 ? In the
present state, the space between the subtitle and the preceding lyrics
is much smaller than the space to the first line of music of song #2 .

Sebastian.