diff --git a/build.sh b/build.sh
index 3f1574b..ba7ae36 100755
--- a/build.sh
+++ b/build.sh
@@ -1,3 +1,4 @@
 #!/bin/bash
 m4 -P -DAMT_SUP=3.5 -DAMT_UNSUP=2.5 chords_serifjazz.m4.xml > chords_serifjazz_1.764mm_Default.xml
+m4 -P -DAMT_SUP=4.2 -DAMT_UNSUP=3.5 chords_serifjazz.m4.xml > chords_serifjazz_1.375mm_R6.xml
 m4 -P -DAMT_SUP=6.0 -DAMT_UNSUP=5.1 chords_serifjazz.m4.xml > chords_serifjazz_0.925mm_R8.xml
diff --git a/chords_serifjazz_1.375mm_R6.xml b/chords_serifjazz_1.375mm_R6.xml
new file mode 100644
index 0000000..01e366e
--- /dev/null
+++ b/chords_serifjazz_1.375mm_R6.xml
@@ -0,0 +1,275 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE museScore [
+
+<!--
+=====================================================================
+    musescore-serifjazz-chords (rewrite)
+    Copyright (C) 2020 RunasSudo (Yingtong Li)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License version 2.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+=====================================================================
+-->
+
+<!-- Superscript amount (negative) -->
+  <!ENTITY sup "4.2">
+<!-- Correction for characters already superscripted in font -->
+  <!ENTITY unsup "3.5">
+
+  ]>
+
+<museScore version="1.24">
+
+<!--
+      Part I: font list
+            associate symbols (code points) with names
+      If no font family is given or font family is "default" then the
+      configured text style font family is used.
+-->
+
+  <!-- Serif font -->
+  <font family="default">
+    <sym code="0x266d" name="b"/>
+    <sym code="0x266e" name="natural"/>
+    <sym code="0x266f" name="#"/>
+
+    <sym code="0x1d12a" name="##"/>
+    <sym code="0x1d12b" name="bb"/>
+
+    </font>
+
+  <!-- Serif font adjusted superscript characters -->
+  <font family="default">
+    <mag>1.4</mag>
+
+    <sym code="0x00b0" name="degree"/>
+    <sym code="0x1d1a9" name="oslash"/>
+
+    </font>
+
+  <!-- Sans-serif font -->
+  <font family="FreeSans">
+    <mag>0.7</mag>
+
+    <sym value="sus" name="sus"/>
+    <sym value="add" name="sadd"/>
+
+    <sym name="("/>
+    <sym name=")"/>
+    <sym name="M"/>
+    <sym name="Ma"/>
+    <sym name="Maj"/>
+    <sym name="maj"/>
+    <sym name="m"/>
+    <sym name="min"/>
+    <sym name="Mi"/>
+    <sym name="Min"/>
+    <sym name="aug"/>
+    <sym name="Aug"/>
+    <sym name="dim"/>
+    <sym name="Dim"/>
+    <sym name="alt"/>
+    <sym name="Alt"/>
+    <sym name="bass"/>
+    <sym name="Bass"/>
+    <sym name="pedal"/>
+    <sym name="Pedal"/>
+
+    <sym value="0" name="s0"/>
+    <sym value="1" name="s1"/>
+    <sym value="2" name="s2"/>
+    <sym value="3" name="s3"/>
+    <sym value="4" name="s4"/>
+    <sym value="5" name="s5"/>
+    <sym value="6" name="s6"/>
+    <sym value="7" name="s7"/>
+    <sym value="8" name="s8"/>
+    <sym value="9" name="s9"/>
+
+    <sym value="(" name="s("/>
+    <sym value=")" name="s)"/>
+
+    </font>
+
+  <font family="default">
+    <mag>0.75</mag>
+
+    <sym value="," name="s,"/>
+    <sym value="/" name="s/"/>
+    <sym value="," name="s,"/>
+    <sym value="/" name="s/"/>
+
+    <sym name="no"/>
+    <sym name="omit"/>
+
+    <sym code="0x266d" name="sb"/>
+    <sym code="0x266f" name="s#"/>
+
+    </font>
+
+<!--
+      Part II: token list
+            define how the various tokens within a chord symbol should be rendered
+
+         name     ordinary text name of token
+                  multiple names may be listed to allow mseveral different tokens to render the same way
+         render   this is a script that contains render commands
+                  see Part III for details
+-->
+
+  <!-- Chord qualities -->
+  <token>
+    <name>o</name>
+    <render>m:0:&unsup; degree m:-1.0:-&unsup;</render>
+    </token>
+  
+  <token>
+    <name>0</name>
+    <render>m:0:&unsup; oslash m:-1.0:-&unsup;</render>
+    </token>
+
+  <token>
+    <name>*</name> <!-- used to fix kerning for letter "A" -->
+    <render>m:-1.0:0;</render>
+    </token>
+
+  <token>
+    <name>*o</name> <!-- A° -->
+    <render>m:-2.0:&unsup; degree m:-1.0:-&unsup;</render>
+    </token>
+
+  <token>
+    <name>*h</name> <!-- Aø -->
+    <render>m:-2.0:&unsup; oslash m:-1.0:-&unsup;</render>
+    </token>
+
+  <!-- Modifier text -->
+  <token class="modifier">
+    <name>add</name>
+    <render>m:0:-&sup; sadd m:0:&sup;</render>
+    </token>
+
+  <token class="modifier">
+    <name>sus</name>
+    <render>m:0:-&sup; sus m:0:&sup;</render>
+    </token>
+
+  <!-- Modifier numbers -->
+  <token class="modifier">
+    <name>0</name>
+    <render>m:0:-&sup; s0 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>1</name>
+    <render>m:0:-&sup; s1 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>2</name>
+    <render>m:0:-&sup; s2 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>3</name>
+    <render>m:0:-&sup; s3 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>4</name>
+    <render>m:0:-&sup; s4 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>5</name>
+    <render>m:0:-&sup; s5 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>6</name>
+    <render>m:0:-&sup; s6 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>7</name>
+    <render>m:0:-&sup; s7 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>8</name>
+    <render>m:0:-&sup; s8 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>9</name>
+    <render>m:0:-&sup; s9 m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>(</name>
+    <render>m:0:-&sup; s( m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>)</name>
+    <render>m:0:-&sup; s) m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>b</name>
+    <render>m:0:-&sup; sb m:0:&sup;</render>
+    </token>
+  <token class="modifier">
+    <name>#</name>
+    <render>m:0:-&sup; s# m:0:&sup;</render>
+    </token>
+
+  <!-- Extension numbers -->
+  <token class="extension">
+    <name>0</name>
+    <render>m:0:-&sup; s0 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>1</name>
+    <render>m:0:-&sup; s1 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>2</name>
+    <render>m:0:-&sup; s2 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>3</name>
+    <render>m:0:-&sup; s3 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>4</name>
+    <render>m:0:-&sup; s4 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>5</name>
+    <render>m:0:-&sup; s5 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>6</name>
+    <render>m:0:-&sup; s6 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>7</name>
+    <render>m:0:-&sup; s7 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>8</name>
+    <render>m:0:-&sup; s8 m:0:&sup;</render>
+    </token>
+  <token class="extension">
+    <name>9</name>
+    <render>m:0:-&sup; s9 m:0:&sup;</render>
+    </token>
+  
+  <token class="extension">
+    <name>6/9</name>
+    <render>m:0:-&sup; s6 m:-0.5:&sup; m:0:-0.5 / m:-0.5:0.5 s9</render>
+    </token>
+
+  <renderRoot>:n :a</renderRoot>
+  <renderBase>m:-0.2:1 / m:0.2:1 :n :a m:0:-2</renderBase>
+
+  </museScore>