\version "2.19.83"

{
  \override MetronomeMark.outside-staff-priority = #100
  \tempo \markup \concat { { \fontsize #-1 \general-align #Y #DOWN \note #"2" #1 } " nicht zu langsam" }
  R1 |
  \override RehearsalMark.outside-staff-priority = #-100 \mark \markup { \fontsize #-2 \musicglyph "scripts.segno" }
  r2 a'2^\markup "(ruhig)"
}
{
  \override MetronomeMark.outside-staff-priority = #100
  \tempo \markup \concat { { \fontsize #-1 \general-align #Y #DOWN \note #"2" #1 } " nicht zu langsam" }
  R1 |
  \override RehearsalMark.outside-staff-priority = #-100 \mark \markup { \fontsize #-2 \musicglyph "scripts.segno" }
  r2 a'2^\markup \center-column { "(ruhig)" }
}
{
  \override MetronomeMark.outside-staff-priority = #100
  \tempo \markup \concat { { \fontsize #-1 \general-align #Y #DOWN \note #"2" #1 } " nicht zu langsam" }
  R1 |
  \override RehearsalMark.outside-staff-priority = #-100 \mark \markup { \fontsize #-2 \musicglyph "scripts.segno" }
  r2 a'2^\markup \right-align "(ruhig)"
}
{
  \override MetronomeMark.outside-staff-priority = #100
  \tempo \markup \concat { { \fontsize #-1 \general-align #Y #DOWN \note #"2" #1 } " nicht zu langsam" }
  R1 |
  \override RehearsalMark.outside-staff-priority = #-100 \mark \markup { \fontsize #-2 \musicglyph "scripts.segno" }
  r2 a'2^\markup \left-align "(ruhig)"
}
{
  \override MetronomeMark.outside-staff-priority = #100
  \tempo \markup \concat { { \fontsize #-1 \general-align #Y #DOWN \note #"2" #1 } " nicht zu langsam" }
  R1 |
  \override RehearsalMark.outside-staff-priority = #-100 \mark \markup { \fontsize #-2 \musicglyph "scripts.segno" }
  r2 a'2^\markup \center-align "(ruhig)"
}

{
  \override MetronomeMark.outside-staff-priority = #100
  \tempo "some MetronomeMark"
  R1 |
  \override RehearsalMark.outside-staff-priority = #-100 \mark \markup { \fontsize #-2 \musicglyph "scripts.segno" }
  r2 a'2^\markup \center-align "(ruhig)"
}