rag.ly · 91 lines
\version "2.24.0"
\header {
title = "Espresso Rag"
subtitle = "a café piano novelty"
}
% ============================================================
% RIGHT HAND (temporarily moves to the lower staff, bars 9-12,
% while the left hand crosses over it on the upper staff)
% ============================================================
upper = {
\key c \major
\time 2/4
\tempo "Light ragtime (straight eighths)" 4 = 104
% ---- A section (bars 1-8): melody in the right hand ----
% bars 1-4
c''8 e''16 g''~ g''8 e''8 |
r16 e'' g'' e''~ e''8 bes'16 g' |
a'8 c''16 d''~ d''8 c''16 a' |
a'16 f'16 g'8 f'8 r8 |
\break
% bars 5-8
e''8 g''16 a''~ a''8 g''16 e'' |
cis''8 e''16 g''~ g''8 e''16 cis'' |
f''16 d'' f'' a''~ a''8 f''8 |
e''8 g''16 bes''16 g''8 e''8 |
\break
% ---- bars 9-12: R.H. takes over the oom-pah bass ----
\change Staff = "lower"
f,8_\markup \italic "R.H." <f a>8 c,8 <f a>8 |
bes,8 <d f>8 f,8 <d f>8 |
c,8 <g bes>8 c,8 <g bes>8 |
g,8 <f b>8 d,8 <f b>8 |
\break
\change Staff = "upper"
% ---- A' section (bars 13-16): back to normal hands ----
c'''8^\markup \italic "R.H. — normal hands" g''16 e''16 c''8 g'8 |
a'8 cis''16 e''~ e''8 a''16 cis'' |
f''8 d''16 f''16 b'8 d''16 f''16 |
r8 g''16 a''16 <c'' e'' g'' c'''>4\fermata |
\bar "|."
}
% ============================================================
% LEFT HAND (crosses over the right hand, bars 9-12: it is
% written on the upper staff, above the right-hand bass)
% ============================================================
lower = {
\key c \major
\time 2/4
\clef bass
% bars 1-4
c,8\p <e g>8 g,8 <e g>8 |
c,8 <e g>8 bes,8 <e g>8 |
f,8 <f a>8 c,8 <f a>8 |
f,8 <f a>8 c,8 <f a>8 |
% bars 5-8
c,8 <e g>8 g,8 <e g>8 |
a,8 <g cis'>8 e,8 <g cis'>8 |
d,8\< <f a>8 a,8 <f a>8 |
c,8 <e bes>8 g,8 <e bes>8\! |
% ---- bars 9-12: L.H. crosses over, playing the tune up high ----
\change Staff = "upper"
a'8\mf^\markup \bold \italic "L.H. over R.H. (bars 9–12)" c''16 d''~ d''8 c''16 a' |
d''8 f''16 d''~ d''8 bes'8 |
g'8 bes'16 c''~ c''8 bes'16 g' |
f''16 d'' b' d''~ d''8 f''8 |
\change Staff = "lower"
% bars 13-16
c,8\p_\markup \italic "L.H." <e g>8 g,8 <e g>8 |
a,8 <g cis'>8 e,8 <g cis'>8 |
d,8 <f a>8 g,8 <f b>8 |
c,8 <e g>8 <c e g c'>4\fermata |
\bar "|."
}
\paper {
system-system-spacing.basic-distance = #22
print-page-number = ##f
}
\score {
\new PianoStaff \with { instrumentName = "Piano" }
<<
\new Staff = "upper" \upper
\new Staff = "lower" \lower
>>
\layout { }
}round 1 of 2
Espresso Rag, with the left hand crossing over: Pareto 26.10 Preview
modelunbiased/pareto-26.10-previewtasklilypond-espresso-rag@v1, checks c1, harness h1date2026-10-05rounds2 of 8 allowed, 12 minutes on the clockcost$0.1137thinkingmediumtokens48,878 in, 29,909 out, of which 0 reasoningtime4 min 32 s
Piano staffdecided by a number, from the filepass
Sixteen barsdecided by a number, from the filepass
Left hand crossesdecided by a number, from the filepass
Right hand keeps goingdecided by a number, from the filepass
Crossing markeddecided by a number, from the filepass
Stems apartdecided by a number, from the filepass
There is no post about this one, since only some results need one, so the picture, the source and the scoring are here instead.
Write, in LilyPond, 16 bars of café piano music called "Espresso Rag" in which the left hand crosses over the right hand for bars 9 to 12.Frozen at v1. This model got this and nothing else.
LilyPond's own record of every note: its hand, staff, bar, pitch and stem, read while the file is engraved. A voice belongs to the hand whose staff it starts on, unless its notes are labelled with a hand's name. The script was written after hearing Sol's and Pareto's runs, so Luna was its first fair test. How good the music sounds is rated by ear. How it is scored, and this run's files on GitHub.