diff --git a/inc.lib/classes/MusicXML/Model/ForPart.php b/inc.lib/classes/MusicXML/Model/ForPart.php
new file mode 100644
index 0000000..8f755d4
--- /dev/null
+++ b/inc.lib/classes/MusicXML/Model/ForPart.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace MusicXML\Model;
+
+use MusicXML\MusicXMLWriter;
+
+/**
+ * ForPart
+ * @Xml
+ * @Referece https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/for-part/
+ * @Data
+ */
+class ForPart extends MusicXMLWriter
+{
+    /**
+     * ID
+     * 
+     * @Attribute 
+     * @var string
+     */
+    public $id;
+    
+    /**
+     * Number
+     * 
+     * @Attribute 
+     * @var integer
+     */
+    public $number;
+    
+    /**
+     * Part clef
+     *
+     * @PropertyElement
+     * @var PartClef
+     */
+    public $partClef;
+    
+    /**
+     * Part transpose
+     *
+     * @PropertyElement(name="part-transpose")
+     * @var PartTranspose
+     */
+    public $partTranspose;
+    
+    
+}
\ No newline at end of file
diff --git a/inc.lib/classes/MusicXML/Model/PartClef.php b/inc.lib/classes/MusicXML/Model/PartClef.php
new file mode 100644
index 0000000..fd507ce
--- /dev/null
+++ b/inc.lib/classes/MusicXML/Model/PartClef.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace MusicXML\Model;
+
+use MusicXML\MusicXMLWriter;
+
+/**
+ * PartClef
+ * @Xml
+ * @Reference https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/part-clef/
+ * @Data
+ */
+class PartClef extends MusicXMLWriter
+{
+    /**
+     * Sign
+     *
+     * @PropertyElement
+     * @var string
+     */
+    public $sign;
+    
+    /**
+     * Line
+     *
+     * @PropertyElement
+     * @var integer
+     */
+    public $line;
+    
+    /**
+     * Clef octave change
+     *
+     * @PropertyElement(name="clef-octave-change")
+     * @var string
+     */
+    public $clefOctaveChange;
+}
\ No newline at end of file
diff --git a/inc.lib/classes/MusicXML/Model/PartTranspose.php b/inc.lib/classes/MusicXML/Model/PartTranspose.php
new file mode 100644
index 0000000..714ced3
--- /dev/null
+++ b/inc.lib/classes/MusicXML/Model/PartTranspose.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace MusicXML\Model;
+
+use MusicXML\MusicXMLWriter;
+
+/**
+ * PartTranspose
+ * @Xml
+ * @Reference https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/part-transpose/
+ * @Data
+ */
+class PartTranspose extends MusicXMLWriter
+{
+    /**
+     * Diatonic
+     * @PropertyElement
+     * @var string
+     */
+    public $diatonic;
+    
+    /**
+     * Chromatic
+     * @PropertyElement
+     * @var string
+     */
+    public $chromatic;
+    
+    /**
+     * Octave change
+     * @PropertyElement(name="octave-change")
+     * @var string
+     */
+    public $octaveChange;
+    
+    /**
+     * Double
+     * @PropertyElement(name="double")
+     * @var string
+     */
+    public $double;
+}