diff --git a/src/datatypes.h b/src/datatypes.h
index fcd9cdf..f708a10 100644
--- a/src/datatypes.h
+++ b/src/datatypes.h
@@ -44,6 +44,7 @@ namespace VISEQ::APP{
 		float speed = 16.0f;
 		int gui_selected_midi_out;
 	};
+	NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(AppSettings, mode, width, height, grid, bpm, fps, speed, gui_selected_midi_out)
 }
 
 namespace VISEQ::GRAPH{
diff --git a/src/graph-item.h b/src/graph-item.h
index dbba9e8..fd4768d 100644
--- a/src/graph-item.h
+++ b/src/graph-item.h
@@ -9,11 +9,23 @@ namespace VISEQ::GRAPH {
 	class GraphItem{
 
 		public:
-			GraphItem() {static int _id; id=_id++;}
+			GraphItem() {newId();}
+			GraphItem(const GraphItem& G) {
+				newId();
+				graphItemType = G.graphItemType;
+				neighbors = G.neighbors;
+			}
 			std::vector<std::shared_ptr<GraphItem>> neighbors;
-			int id = 0;
 			GraphItemType graphItemType;
+			
+			int id = 0;
 
+			void newId(){
+				static int _id;
+				id = _id;
+				_id++;
+			}
+			
 			virtual void draw(Vec2Df mouse, Camera2D cam) {};
 			virtual GraphItemType getType() {return graphItemType;}
 			virtual ~GraphItem() = default;
diff --git a/src/graph-manager.h b/src/graph-manager.h
index 72aa4ff..aac1e15 100644
--- a/src/graph-manager.h
+++ b/src/graph-manager.h
@@ -159,7 +159,7 @@ namespace VISEQ::GRAPH {
 			void splitEdges(){
 				for(auto s : split_edges){
 					Vec2Df center = s->end->position.center(s->start->position);
-					SPTR_Node cn = addMidiNode(center);
+					SPTR_Node cn = copyNode(std::dynamic_pointer_cast<MidiNode>(s->start), center);
 					addConnection(s->start, cn);
 					addConnection(cn, s->end);
 					remove_edges.push_back(s);
diff --git a/src/main.cpp b/src/main.cpp
index 13b7091..dcec8a3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -83,12 +83,13 @@ int main(){
 		std::ifstream f("state.json");
 		json graph = json::parse(f);
 
+		app.settings = graph.at("settings");
+
 //		app.gm = graph["graphmanager"].get<VISEQ::GRAPH::GraphManager>();
 		for(auto n : graph.at("graphmanager").at("nodes")){
 			std::shared_ptr<MidiNode> mn = n;
 			app.gm.nodes.push_back(mn);
-			/*app.gm.addMidiNode(n.at("position").get<Vec2Df>());*/
-			/*app.gm.nodes.back().midi_note_channel = n.at("midi_note_channel").get<int>();*/
+			std::cout << std::format("adding node {}", mn->id) << std::endl;
 		}
 
 		for(auto e : graph.at("graphmanager").at("edges")){
@@ -98,10 +99,30 @@ int main(){
 			VEC_SPTR_Node start = app.gm.nodes | RANGE_FILTER([start_id](SPTR_Node n){return n->id == start_id;}) | std::ranges::to<VEC_SPTR_Node>();			
 			VEC_SPTR_Node end = app.gm.nodes | RANGE_FILTER([end_id](SPTR_Node n){return n->id == end_id;}) | std::ranges::to<VEC_SPTR_Node>();
 
-			if(!start.empty() && !end.empty()) app.gm.addConnection(start.front(), end.front());
+			if(!start.empty() && !end.empty()) {
+				std::cout << std::format("connection {} to {}", start_id, end_id) << std::endl;
+				app.gm.addConnection(start.front(), end.front());
+			}
 
 		}
 		
+		for(auto s : graph.at("signalmanager").at("signals")){
+			int start_id = s.at("start").get<int>();
+			int next_id = s.at("next").get<int>();
+			int last_id = s.at("last").get<int>();
+			std::shared_ptr<VISEQ::SIGNAL::Signal> ms = s;
+			
+			VEC_SPTR_Node start = app.gm.nodes | RANGE_FILTER([start_id](SPTR_Node n){return n->id == start_id;}) | std::ranges::to<VEC_SPTR_Node>();
+			VEC_SPTR_Node last = app.gm.nodes | RANGE_FILTER([last_id](SPTR_Node n){return n->id == last_id;}) | std::ranges::to<VEC_SPTR_Node>();
+			VEC_SPTR_Node next = app.gm.nodes | RANGE_FILTER([next_id](SPTR_Node n){return n->id == next_id;}) | std::ranges::to<VEC_SPTR_Node>();
+			ms->start = start.front();
+			ms->next = next.front();
+			ms->last = last.front();
+			app.sm.signals.push_back(ms);
+
+			std::cout << std::format("adding signal with start node {}", start_id) << std::endl;
+		}
+		
 	} else {
 		for(int i = 0; i < 4; ++i){
 			app.gm.addMidiNode(Vec2Df{(float)i * app.settings.grid*4 + 7 * app.settings.grid, 2 * app.settings.grid*4});
@@ -211,14 +232,17 @@ int main(){
 				}
 
 				if(mouse_released){	
+					int n_selected = 0;
 					for(auto& n : app.gm.nodes){
 						if(CheckCollisionPointRec(n->position, selection)) {
 							n->selected = true;
 							n->in_rect = false;
+							n_selected++;
 						} else {
 							if(!IsKeyDown(KEY_LEFT_SHIFT)) n->selected = false;
 						}
 					}
+					if(n_selected > 0) copied_nodes.clear();
 					selection = (Rectangle){0,0,0,0};
 				}
 				break;
@@ -308,7 +332,9 @@ int main(){
 						} else if(!hovering_connectors.empty()){
 							app.gm.addConnection(connecting_nodes.front(), hovering_connectors.front());
 						} else {
-							SPTR_Node new_node = app.gm.addMidiNode(mouse_pos);
+							//SPTR_Node new_node = app.gm.addMidiNode(mouse_pos);
+							SPTR_Node new_node = app.gm.copyNode(std::dynamic_pointer_cast<MidiNode>(connecting_nodes.front()), mouse_pos);
+							new_node->connecting = false;
 							app.gm.addConnection(connecting_nodes.front(), new_node);
 						}
 					}
@@ -421,8 +447,8 @@ int main(){
 		EndDrawing();
 	}
 
-	//std::ofstream file("state.json");
-	//file << json(app);
+	std::ofstream file("state.json");
+	file << json(app);
 
  	std::cout << std::setw(4) << json(app) << std::endl;
 	
diff --git a/src/midi-node.h b/src/midi-node.h
index 6057eeb..2f77609 100644
--- a/src/midi-node.h
+++ b/src/midi-node.h
@@ -166,6 +166,7 @@ namespace VISEQ::GRAPH::NODES {
 				DrawCircle(connector.x, connector.y, 8.0f, (Color){108, 153, 187, (unsigned char)opacity});
 			}
 			if(highlighted) DrawCircleLinesV(position, radius+2, (Color){255, 0, 0, 200});
+			DrawText(std::format("{}", id).c_str(), position.x + 20.0f, position.y + 20.0f, 10, WHITE);
 		}
 	};
 }
diff --git a/src/signal-manager.h b/src/signal-manager.h
index 5dd31fb..33427c5 100644
--- a/src/signal-manager.h
+++ b/src/signal-manager.h
@@ -7,6 +7,7 @@
 #include "midi.h"
 
 #include <chrono>
+#include <locale>
 #include <memory>
 #include <thread>
 
@@ -30,6 +31,8 @@ namespace VISEQ::SIGNAL {
 
 			VEC_SPTR_Signal signals;
 
+			VEC_SPTR_Signal erase_signals;
+
 			bool loop = true;
 			bool play = false;
 
@@ -72,8 +75,8 @@ namespace VISEQ::SIGNAL {
 				signals.back()->start = node;
 			}
 
-			void removeSignal(int n){
-				signals.erase(signals.begin() + n);
+			void removeSignal(std::shared_ptr<Signal> s){
+				erase_signals.push_back(s);
 			}
 
 			void updateSignals(){
@@ -94,8 +97,8 @@ namespace VISEQ::SIGNAL {
 										auto midinode = std::dynamic_pointer_cast<MidiNode>(s->next);
 										for(auto &m : midinode->midi_outs){
 											if(m.second.enabled) {
-												if(midinode->send_note) midi.note(m.second.i, midinode->midi_note_channel, midinode->midi_note, midinode->midi_velocity, midinode->midi_gate);	
-												if(midinode->send_cc) midi.cc(m.second.i, midinode->midi_cc_channel, midinode->midi_cc, midinode->midi_cc_value);	
+												if(midinode->send_note) midi.note(m.second.i, midinode->midi_note_channel, (int)Clamp(midinode->midi_note + s->midi_note_offset, 0, 127), midinode->midi_velocity, midinode->midi_gate);	
+												if(midinode->send_cc) midi.cc(m.second.i, midinode->midi_cc_channel, midinode->midi_cc, (int)Clamp(midinode->midi_cc_value + s->midi_cc_offset, 0, 127));	
 												if(midinode->send_pitch_bend) midi.pitch_bend(m.second.i, midinode->midi_pitch_bend_channel, midinode->midi_pitch_bend);	
 											}
 										}
@@ -113,11 +116,17 @@ namespace VISEQ::SIGNAL {
 			}
 
 			void drawSignals(Vec2Df mouse_pos, Camera2D camera){
-				for(auto s : signals){
-					mutex->lock();
-					s->draw(mouse_pos, camera);
-					mutex->unlock();
+				mutex->lock();
+				if(!erase_signals.empty()){
+					for(auto s: erase_signals){
+						std::erase(signals, s); 	
+					}
+					erase_signals.clear();
 				}
+				for(auto s : signals){
+					s->draw(mouse_pos, camera);
+				}
+				mutex->unlock();
 			}
 
 	};
diff --git a/src/signal.h b/src/signal.h
index 262454d..d2d231b 100644
--- a/src/signal.h
+++ b/src/signal.h
@@ -12,7 +12,7 @@ namespace VISEQ::SIGNAL {
 	class Signal : public BASE::Movable{
 		public:
 
-		Signal();
+		Signal() {}
 		Signal(Vec2Df position, float r, float _speed, Color color) : Movable(position, Vec2Df(0,0), _speed), radius(r), color(color) {}
 		
 		NODES::SPTR_Node next;
@@ -22,18 +22,22 @@ namespace VISEQ::SIGNAL {
 		NODES::SPTR_Node start;
 
 		bool at_target = false;
+		bool run = true;
 
-		float radius;
+		float radius = 8.0f;
 
 		float multiplier = 1.0f;
 
 		Color color;
 
+		int midi_note_offset = 0;
+		int midi_cc_offset = 0;
+
 		void update(double t_delta){
 			// 120px / 16th = 1920px / whole note
 			// whole note = 2s at 120bpm
 			// 960px / s
-			position += direction.norm() * speed * multiplier * (float)t_delta / 1000000.0f;
+			if(run) position += direction.norm() * speed * multiplier * (float)t_delta / 1000000.0f;
 		}
 
 		void draw(Vec2Df mouse, Camera2D cam) {
diff --git a/src/state-io.h b/src/state-io.h
index f2ac1ab..1f61366 100644
--- a/src/state-io.h
+++ b/src/state-io.h
@@ -56,6 +56,7 @@ namespace VISEQ::GRAPH::NODES {
 			{"distributionMode", N.distributionMode},
 			{"nodeType", N.nodeType},
 			{"midi_note_channel",N.midi_note_channel},
+			{"midi_note",N.midi_note},
 			{"midi_velocity",N.midi_velocity},
 			{"midi_gate",N.midi_gate},
 			{"midi_cc_channel",N.midi_cc_channel},
@@ -76,6 +77,7 @@ namespace VISEQ::GRAPH::NODES {
 		j.at("distributionMode").get_to(N.distributionMode);
 		j.at("nodeType").get_to(N.nodeType);
 		j.at("midi_note_channel").get_to(N.midi_note_channel);
+		j.at("midi_note").get_to(N.midi_note);
 		j.at("midi_velocity").get_to(N.midi_velocity);
 		j.at("midi_gate").get_to(N.midi_gate);
 		j.at("midi_cc_channel").get_to(N.midi_cc_channel);
@@ -164,10 +166,34 @@ namespace VISEQ::BASE{
 
 namespace VISEQ::SIGNAL{
 	inline void to_json(json& j, const Signal& G){
-		j = json{{"position", G.position},{"start",G.start->id},{"speed",G.speed}};
+		std::map<std::string, int> fc = {{"r",G.color.r},{"g",G.color.g},{"b",G.color.b},{"a",G.color.a}};
+		j = json{{"color",fc},{"position", G.position},{"radius",G.radius},{"start",G.start->id},{"next",G.next->id},{"last",G.last->id},{"speed",G.speed},{"midi_note_offset",G.midi_note_offset},{"midi_cc_offset",G.midi_cc_offset},{"multiplier",G.multiplier}};
+	}
+	
+	inline void from_json(const json& j, Signal& S){
+
+		Color c;
+		c.r = j.at("color")["r"].get<int>();
+		c.g = j.at("color")["g"].get<int>();
+		c.b = j.at("color")["b"].get<int>();
+		c.a = j.at("color")["a"].get<int>();
+
+		j.at("position").get_to<Vec2Df>(S.position);
+		j.at("speed").get_to<float>(S.speed);
+		j.at("radius").get_to<float>(S.radius);
+		j.at("midi_note_offset").get_to(S.midi_note_offset);
+		j.at("midi_cc_offset").get_to(S.midi_cc_offset);
+
+		S.color = c;
 	}
 
 	inline void to_json(json& j, const std::shared_ptr<Signal>& G){
 		j = *G; 
 	}
+	
+	inline void from_json(const json& j, std::shared_ptr<Signal>& S){
+		S.reset(new Signal(j.get<Signal>()));
+	}
 }
+
+
diff --git a/src/state-manager.h b/src/state-manager.h
index 826bcd5..ad8773e 100644
--- a/src/state-manager.h
+++ b/src/state-manager.h
@@ -147,7 +147,7 @@ namespace VISEQ::APP {
 	};
 
 	inline void to_json(json& j, const AppState& A){
-		j = json{{"graphmanager", A.gm}, {"signalmanager", A.sm}};
+		j = json{{"graphmanager", A.gm}, {"signalmanager", A.sm}, {"settings",A.settings}};
 	}
 	
 	inline void from_json(const json& j, AppState& A){
diff --git a/src/ui.h b/src/ui.h
index 8b03244..aed7cb1 100644
--- a/src/ui.h
+++ b/src/ui.h
@@ -11,6 +11,7 @@
 
 #include <memory>
 #include <ranges>
+#include <set>
 
 namespace VISEQ::APP::UI{
 	class AppUI{
@@ -22,6 +23,8 @@ namespace VISEQ::APP::UI{
 		GraphManager *gm;
 		SIGNAL::SignalManager *sm;
 
+		bool bpm_spinner_edit_mode = false;
+
 		void init(){
 			GuiLoadStyleDark();
 		}
@@ -38,8 +41,9 @@ namespace VISEQ::APP::UI{
 			const int s_bpm = s_controls + 45;
 			GuiLabel((Rectangle){20, (float)s_bpm, 120, 20}, "TIMING");
 			GuiLabel((Rectangle){200, (float)s_bpm, 40, 20}, std::format("{}",settings->bpm).c_str());
-			float _bpm = (float)settings->bpm;
-			GuiSlider((Rectangle){20, (float)s_bpm + 25, 240, 20}, "", "", &_bpm, 1, 300);
+			int _bpm = settings->bpm;
+//			GuiSlider((Rectangle){20, (float)s_bpm + 25, 240, 20}, "", "", &_bpm, 1, 300);
+			if(GuiSpinner((Rectangle){20, (float)s_bpm + 25, 240, 20}, "", &_bpm, 1, 300, bpm_spinner_edit_mode)) bpm_spinner_edit_mode = !bpm_spinner_edit_mode;
 			settings->bpm = _bpm;
 
 			int s_midi = s_bpm + 75;
@@ -71,13 +75,15 @@ namespace VISEQ::APP::UI{
 			
 			int signal_configs = 0;
 			for(auto &s : sm->signals){
-				if(GuiButton((Rectangle){20,(float)s_signal+70 + signal_configs*20, 20, 20},"X")) sm->removeSignal(signal_configs);
+				if(GuiButton((Rectangle){20,(float)s_signal+70 + signal_configs*20, 20, 20},"X")) sm->removeSignal(s);
 				DrawCircle(55, s_signal+80 + signal_configs*20, 6.0F, s->color);
-				float s_multiplier = round(s->multiplier*10.0f)/10.0f;
-				float signal_bpm = settings->bpm * s->multiplier;
-				GuiSlider((Rectangle){70, (float)s_signal+70 + signal_configs*20, 160, 20}, "", std::format("{:.1f}",signal_bpm).c_str(), &s_multiplier, 0.1, 10);
-				s->multiplier = s_multiplier;
-				s->speed = settings->speed;
+				float s_speed = round(s->speed);
+				s->multiplier = settings->bpm / 120.0f;
+				float signal_bpm = round(settings->bpm * s->multiplier * (s->speed / settings->speed));
+				GuiSlider((Rectangle){70, (float)s_signal+70 + signal_configs*20, 120, 20}, "", "", &s_speed, 1.0f, 16.0f * settings->grid * 4);
+				GuiLabel((Rectangle){195, (float)s_signal+70 + signal_configs*20, 30, 20}, std::format("{}",signal_bpm).c_str());
+				GuiToggle((Rectangle){240, (float)s_signal+70 + signal_configs*20, 20, 20},"P", &s->run); 
+				s->speed = s_speed;
 				signal_configs++;
 			}