I ought to have a bar line here...

[Mike Dean]

...between the end of the first section and the start of the Trio, but have
stumped myself in properly coding it (I went to alternative endings to
ensure that I had a repeat sign)
(PDF and .ly file attached, beside the snippet below)
\version "2.20.00"
  \repeat volta 2 {
  d2 d8 c d e | f4 f8. e16 d2 | e2 e8 d e f | g4 g8. f16 e2 |
  a4 a8. g16 f8. g16 a8. f16 | g4 g8. f16 e8. f16 g8. e16 |
  g4 a8. g16 f8. f16 e8. e16 | d4 g8. g16 g4 r8 g, |
  c4. g8 c4 d | e4. c8 e4 f | g e f d |}
  \alternative {
   {c c8. c16 c4 r }
   {c c8. c16 c4\mark "Fine" r \bar "|." }
  }

  \break
    \repeat volta 2 {
  \bar ".|:"\mark "Trio" a4.\p r16 e a8. e16 gs8. e16 | a4. r16 e a8. e16
gs8. e16 |
  a4 c  b   e | d8. c16 b8. c16 b2 |
  a4. r16 e a8. e16 gs8. e16 | a4. r16 e a8. e16 gs8. e16 |
  a4 c  b   e | a,4 a8. a16 a4 r |
  }

Mike Dean

March-of-the-Russian-Imperial-Guard.pdf
Description: Adobe PDF document

\version "2.20.00"
\language "english"
#(set-default-paper-size "letter")

\header {
  title = "March of the Russian Imperial Guard"
  subtitle = "(Marche de la garde imperiale Russe"
  composer = "Unknown (at this point)"
  arranger = "Transcribed by Mike Dean"
}
  \relative c'' {
  \key c \major
  \tempo "Allegro"
  \time 4/4
  \partial 8
  g8\f | c4. g8 c4 d | e4. c8 e4 f | g e f d | c c8. c16 c4 r8 g |
  c4. g8 c4 d | e4. c8 e4 f | g e f d | c c8. c16 c4 r |
  
  \repeat volta 2 {
  d2 d8 c d e | f4 f8. e16 d2 | e2 e8 d e f | g4 g8. f16 e2 |
  a4 a8. g16 f8. g16 a8. f16 | g4 g8. f16 e8. f16 g8. e16 |
  g4 a8. g16 f8. f16 e8. e16 | d4 g8. g16 g4 r8 g, |
  c4. g8 c4 d | e4. c8 e4 f | g e f d |}
  \alternative {
   {c c8. c16 c4 r }
   {c c8. c16 c4\mark "Fine" r \bar "|." }
  }
  
  \break
    \repeat volta 2 {
  \bar ".|:"\mark "Trio" a4.\p r16 e a8. e16 gs8. e16 | a4. r16 e a8. e16 gs8. e16 |
  a4 c  b   e | d8. c16 b8. c16 b2 |
  a4. r16 e a8. e16 gs8. e16 | a4. r16 e a8. e16 gs8. e16 |
  a4 c  b   e | a,4 a8. a16 a4 r | 
  }

  \repeat volta 2 {
  e'4.\f f16 e d4 g?8 f | e4. f16 e d4 g8 f 
  e2     d8. e16 c8. e16 | d4 \tuplet 5/4 { c16 d c b c } b4 r
  a4.\p r16 e a8. e16 gs8. e16 | a4. r16 e a8. e16 gs8. e16 |
  a4 c  b   e | a,4 a8. a16 a4 r8
  \once \override Score.RehearsalMark.break-visibility = #end-of-line-visible
  \once \override Score.RehearsalMark.self-alignment-X = #RIGHT
  \mark "D.C. al Fine" 
  }
  }