diff --git a/CMakeLists.txt b/CMakeLists.txt
index c38fbee..158447a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ SET(GCC_COVERAGE_LINK_FLAGS    "-mwindows")
 SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}" )
 SET(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}" )
 
-set(SOURCE_FILES main.cpp screen.cpp screen.h Marker.cpp Marker.h Fumen.cpp Fumen.h Note.cpp Note.h)
+set(SOURCE_FILES main.cpp screen.cpp screen.h Marker.cpp Marker.h Fumen.cpp Fumen.h Note.cpp Note.h Chart.cpp Chart.h)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${FEIS_SOURCE_DIR}/cmake")
 
diff --git a/Chart.cpp b/Chart.cpp
new file mode 100644
index 0000000..33b21e7
--- /dev/null
+++ b/Chart.cpp
@@ -0,0 +1,56 @@
+//
+// Created by Syméon on 25/08/2017.
+//
+
+#include "Chart.h"
+
+void Chart::addNote(Note note) {
+	this->Notes.insert(note);
+}
+
+bool Chart::hasNote(Note note) {
+	return this->Notes.find(note) != Notes.end();
+}
+
+void Chart::removeNote(Note note) {
+	if (hasNote(note)) {
+		Notes.erase(Notes.find(note));
+	}
+}
+
+const std::string &Chart::getDif() const {
+	return dif;
+}
+
+void Chart::setDif(const std::string &dif) {
+	Chart::dif = dif;
+}
+
+int Chart::getLevel() const {
+	return level;
+}
+
+void Chart::setLevel(int level) {
+	Chart::level = level;
+}
+
+int Chart::getResolution() const {
+	return resolution;
+}
+
+void Chart::setResolution(int resolution) {
+	Chart::resolution = resolution;
+}
+
+int Chart::getNoteCount() {
+	return this->Notes.size();
+}
+
+Chart::Chart(const std::string &dif, int level, int resolution) : dif(dif),
+                                                                  level(level),
+                                                                  resolution(resolution),
+                                                                  Notes() {}
+
+const std::set<Note> &Chart::getNotes() const {
+	return Notes;
+}
diff --git a/Chart.h b/Chart.h
new file mode 100644
index 0000000..3044e9a
--- /dev/null
+++ b/Chart.h
@@ -0,0 +1,47 @@
+//
+// Created by Syméon on 25/08/2017.
+//
+
+#ifndef FEIS_CHART_H
+#define FEIS_CHART_H
+
+#include <iostream>
+#include <set>
+#include "Note.h"
+
+// TODO : finir la classe Chart
+
+class Chart {
+
+public:
+
+	Chart(const std::string &dif,
+	      int level = 1,
+	      int resolution = 240);
+
+	const std::string &getDif() const;
+	void setDif(const std::string &dif);
+
+	int getLevel() const;
+	void setLevel(int level);
+
+	int getResolution() const;
+	void setResolution(int resolution);
+
+	void addNote(Note note);
+	void removeNote(Note note);
+	bool hasNote(Note note);
+	int getNoteCount();
+	const std::set<Note> &getNotes() const;
+
+private:
+
+	std::string dif;
+	int level;
+	int resolution;
+	std::set<Note> Notes;
+
+};
+
+
+#endif //FEIS_CHART_H
diff --git a/Fumen.cpp b/Fumen.cpp
index 4b601f2..7fe70f8 100644
--- a/Fumen.cpp
+++ b/Fumen.cpp
@@ -89,22 +89,97 @@ void Fumen::loadFromMemon(std::string path) {
 		this->setJacketPath(j["metadata"]["jacket_path"]);
 		this->setBPM(j["metadata"]["BPM"]);
 		this->setOffset(j["metadata"]["offset"]);
-		// TODO : finir la désérialisation depuis un memon
+		for (auto& chart_json : j["data"]) {
+			this->addChart(Chart(chart_json["dif"],chart_json["level"],chart_json["resolution"]));
+			Chart& chart = this->getFirstChartWithName(chart_json["dif"]);
+			for (auto& note : chart["notes"]) {
+				chart.addNote(Note(note["n"],note["t"],note["l"],note["p"]));
+			}
+		}
+	} else {
+		throw std::runtime_error("Memon file looks invalid : " + path);
 	}
 }
 
-void Fumen::addNote(Note note) {
-	this->Notes.insert(note);
+void Fumen::saveAsMemon(std::string path) {
+
+	std::ofstream fichier(path);
+	using json = nlohmann::json;
+	json j;
+	j["metadata"] = json::object();
+	j["metadata"]["song_title"] = this->getSongTitle();
+	j["metadata"]["artist"] = this->getArtist();
+	j["metadata"]["music_path"] = this->getMusicPath();
+	j["metadata"]["jacket_path"] = this->getJacketPath();
+	j["metadata"]["BPM"] = this->getBPM();
+	j["metadata"]["offset"] = this->getOffset();
+	j["data"] = json::array();
+	for (auto& chart : this->Charts) {
+		json chart_json;
+		chart_json["dif"] = chart.getDif();
+		chart_json["level"] = chart.getLevel();
+		chart_json["resolution"] = chart.getResolution();
+		chart_json["notes"] = json::array();
+		for (auto& note : chart.getNotes()) {
+			json note_json;
+			note_json["n"] = note.getPos();
+			note_json["t"] = note.getTiming();
+			note_json["l"] = note.getLength();
+			note_json["p"] = note.getTrail_pos();
+			chart_json["notes"].push_back(note_json);
+		}
+		j["data"].push_back(chart_json);
+	}
+
+	fichier << std::setw(4) << j << std::endl;
+
 }
 
-void Fumen::removeNote(Note note) {
-	if (hasNote(note)) {
-		Notes.erase(Notes.find(note));
+void Fumen::addChart(Chart chart) {
+	if (!this->hasChartWithName(chart.getDif())) {
+		this->Charts.push_back(chart);
+	} else {
+		throw std::runtime_error("Tried adding chart with already existing name : " + chart.getDif());
 	}
 }
 
-bool Fumen::hasNote(Note note) {
-	return this->Notes.find(note) != Notes.end();
+void Fumen::removeChartByIndex(int index) {
+	this->Charts.erase(this->Charts.begin()+index);
+}
+
+void Fumen::removeAllChartsWithName(std::string dif) {
+	auto & chart;
+	for(chart = this->Charts.begin(); chart != this->Charts.end();)
+	{
+		if(chart.getDif() == dif) {
+			chart = this->Charts.erase(chart);
+		}
+		else {
+			++chart;
+		}
+	}
+}
+
+bool Fumen::hasChartWithName(std::string name) {
+	for (auto& chart : this->Charts) {
+		if (chart.getDif() == name) {
+			return true;
+		}
+	}
+	return false;
+}
+
+Chart& Fumen::getChartByIndex(int index) {
+	return this->Charts.at(index);
+}
+
+Chart& Fumen::getFirstChartWithName(std::string name) {
+	for (auto& chart: this->Charts) {
+		if (chart.getDif() == name) {
+			return chart;
+		}
+	}
+	throw std::runtime_error("Unable to find chart with name : " + name);
 }
 
 const std::string &Fumen::getSongTitle() const {
@@ -165,5 +240,4 @@ Fumen::Fumen(const std::string &songTitle,
                              musicPath(musicPath),
                              jacketPath(jacketPath),
                              BPM(BPM),
-                             offset(offset),
-							 Notes({}) {}
+                             offset(offset) {}
diff --git a/Fumen.h b/Fumen.h
index 71645c2..cc05aa3 100644
--- a/Fumen.h
+++ b/Fumen.h
@@ -12,7 +12,9 @@
 #include <json/json.hpp>
 
 #include "Note.h"
+#include "Chart.h"
 
+// TODO : trouver une manière ÉLÉGANTE d'acceder aux différentes charts
 
 class Fumen {
 
@@ -26,16 +28,21 @@ public:
 	      float offset = 0);
 
 	void loadFromMemon(std::string path);
-	void loadFromMemo(std::string path);
-	void loadFromEve(std::string path);
+	// TODO : implementer ça
+	//void loadFromMemo(std::string path);
+	//void loadFromEve(std::string path);
 
 	void saveAsMemon(std::string path);
-	void saveAsMemo(std::string path);
-	void saveAsEve(std::string path);
+	// TODO : implementer ça
+	//void saveAsMemo(std::string path);
+	//void saveAsEve(std::string path);
 
-	void addNote(Note note);
-	void removeNote(Note note);
-	bool hasNote(Note note);
+	void addChart(Chart chart);
+	void removeChartByIndex(int index);
+	void removeAllChartsWithName(std::string dif);
+	bool hasChartWithName(std::string name);
+	Chart& getChartByIndex(int index);
+	Chart& getFirstChartWithName(std::string name);
 
 	const std::string &getSongTitle() const;
 	void setSongTitle(const std::string &songTitle);
@@ -57,7 +64,7 @@ public:
 
 private:
 
-	std::set<Note> Notes;
+	std::vector<Chart> Charts;
 	std::string songTitle;
 	std::string artist;
 	std::string musicPath;