diff --git a/Makefile b/Makefile
index 37d766d..ba4bda9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,60 +1,13 @@
-SRC = supermario
-BIBLIOGRAPHY = bibliography
-ALLSRC = $(shell find . -name "*.ms")
+SRC ?= supermario
 
-# -P      => move ponctuation after reference
-# -S      => label and bracket-label options
-# -e      => accumulate (use a reference section)
-# -p bib  => bibliography file
-REFER_OPTS = -PS -e -p $(BIBLIOGRAPHY)
-REFER = refer $(REFER_OPTS)
-
-# -k     => iconv conversion (did it ever worked?)
-# -ms    => ms macro
-# -Tpdf  => output device is PDF
-GROFF_OPTS = -t -Tpdf
-GROFF = groff $(GROFF_OPTS)
-
-EQN_OPTS =
-EQN = eqn $(EQN_OPTS)
-
-PRECONV_OPTS =
-PRECONV = preconv $(PRECONV_OPTS)
-
-# ghighlight brings `source-highlight` to troff
-GHIGHLIGHT_OPTS =
-GHIGHLIGHT = ghighlight $(GHIGHLIGHT_OPTS)
-
-VIEWER_OPTS = -
-VIEWER = zathura $(VIEWER_OPTS)
-
-SOELIM_OPTS =
-SOELIM = soelim $(SOELIM_OPTS)
-
-PIC_OPTS =
-PIC = pic $(PIC_OPTS)
-
-GRAP_OPTS =
-GRAP = grap $(GRAP_OPTS)
-
-# GH_INTRO: instructions before each source code provided by source-highlight
-# GH_OUTRO: ------------ after  ---- ------ ---- -------- -- ----------------
-# GH_INTRO/GH_OUTRO: values are separated by ';'
-
-GH_INTRO := .b1;.nr DI 0;.DS I;.fam C
-GH_OUTRO := .fam;.DE;.b2
-
-export GH_INTRO
-export GH_OUTRO
-
-# SHOPTS: cmd line parameter given to source-highlight
-SHOPTS = --outlang-def=./.source-highlight_groff-output-definition
-export SHOPTS
-
-#$(SRC).pdf:
-#	cat $(SRC).ms | $(SOELIM) | $(GHIGHLIGHT) | $(PRECONV) | $(GRAP) | $(EQN) | $(PIC) | $(REFER) | $(GROFF) > $@
+ODIR ?= .
 
 $(SRC).pdf:
-	lilypond $(SRC).ly
+	lilypond -o $(ODIR)/$(SRC) $(SRC).ly
+
+run: $(SRC).pdf
+
+serve:
+	find . -name "*.ly" | entr gmake -B run ODIR=$(ODIR) SRC=$(SRC)
 
 include Makefile.custom
diff --git a/Makefile.custom b/Makefile.custom
index 4e15cf7..1aab74a 100644
--- a/Makefile.custom
+++ b/Makefile.custom
@@ -1,7 +1,4 @@
+# This entire file is quite personal, you can ignore it.
+
 upload:
 	scp $(SRC).pdf tacos:/var/www/htdocs/t.karchnu.fr/doc/
-
-run: $(SRC).pdf
-
-serve:
-	find . -name "*.ly" | entr gmake -B run
diff --git a/supermario.ly b/supermario.ly
index 401d7d3..a5d3a09 100644
--- a/supermario.ly
+++ b/supermario.ly
@@ -1,5 +1,8 @@
 \version "2.18.1"
-\header { title = \markup "Super Mario" }
+\header {
+  title = \markup "Super Mario"
+  composer = "Philippe Pittoli"
+}
 
 supermario = \relative {