associate text with chordname

[achar]

Eureka...

Yhanks for your answers.

accords =
\chordmode
{
  s4.
  ees1:maj7 | bes2:m7 ees:7 | aes1:maj7 | aes:dim7 |
  g2:m7 c:7 | f:m7 bes:7 | g:m7 c:7 | f:m7 bes:7 |
}

melodie =
{
  \clef G
  \time 4/4
  \key ees\major
  \relative c'
  {
    \partial 4. bes'8 ees f |
    \bar"||"
    %% part "A"
    g2 bes4 aes8 g |
    f4 aes2 g4 |
    ees2 g4 f |
    d f2 ees4 |
    \break
    
    bes1~|
    bes8 c d ees \times 2/3  { f4 ees d } |
    bes'1~ |
    bes2~ bes8 bes, ees f |
    \break\bar"||"
  }
}

romannumerals =
{
  s4.
  s4^"I Maj" s s s
  s4^"ii / V" s s^"V7 /IV" s
  s4^"IV Maj" s2.
  s4^"IV dim7" s2.
 
  s2^"iii m7" s^"V7 / ii"
  s2^"ii m7" s^"V7"
  s2^"iii m7" s^"V7 / ii"
  s2^"ii m7" s^"V7"
}

\header
{
  title = "The Nearness of You"
}

\score
{
  <<
    \new ChordNames \accords
    \new Dynamics \romannumerals
    \new Staff \melodie
  >>
  \layout{}
}