diff --git a/C/actions.cpp b/C/actions.cpp
new file mode 100644
index 0000000..14e1d82
--- /dev/null
+++ b/C/actions.cpp
@@ -0,0 +1,27 @@
+
+void setSample(int sample) {
+  if(setErease) {
+
+    ereaseSample = sample;
+
+  } else if(selectPattern) {
+
+    loadPattern(sample);
+    selectPattern = false;
+
+  } else if(selectBank) {
+
+    loadBank(sample);
+    selectBank = false;
+
+  } else {
+
+    pattern[sample-1][step-1] = 1;
+    for(int i=0; i<matrix[0]; i++) {
+      for(int y=0; y<matrix[1]; y++) {
+        printf("%d ", pattern[i][y]);
+      }
+      printf("\n");
+    }
+  }
+}
diff --git a/C/draw.cpp b/C/draw.cpp
new file mode 100644
index 0000000..d2f7cab
--- /dev/null
+++ b/C/draw.cpp
@@ -0,0 +1,36 @@
+void drawRects(int step){
+
+  SDL_RenderClear(renderer);
+
+  int cols = matrix[1];
+  int rows = matrix[0];
+  int colWidth = ((600-5)/cols)-5;
+  int rowHeight = ((300-5)/rows)-5;
+
+  for(int i=0; i<rows; i++) {
+    for(int y=0; y<cols; y++) {
+      SDL_Rect rect;
+      rect.x = (colWidth+5)*y+5;
+      rect.y = (rowHeight+5)*i+5;
+      rect.w = colWidth;
+      rect.h = rowHeight;
+
+      if(pattern[i][y] == 1) {
+        SDL_SetRenderDrawColor(renderer, 50, 255, 50, 255);
+      } else {
+        SDL_SetRenderDrawColor(renderer, 50, 50, 50, 255);
+      }
+      SDL_RenderFillRect(renderer, &rect);
+
+      if(step == y) {
+        SDL_SetRenderDrawColor(renderer, 200, 200, 200, 255);
+        SDL_RenderDrawRect(renderer, &rect);
+      }
+
+      SDL_SetRenderDrawColor(renderer, 100, 100, 100, 255);
+    }
+  }
+
+  SDL_RenderPresent(renderer);
+}
+
diff --git a/C/inputs.cpp b/C/inputs.cpp
index bf732e5..2d46169 100644
--- a/C/inputs.cpp
+++ b/C/inputs.cpp
@@ -1,17 +1,32 @@
-void inputActions(SDL_Event e, int step) {
+void inputActions(SDL_Event e) {
   switch (e.key.keysym.sym) {
     case SDLK_1:
-      setSample(1, step);
+      setSample(1);
       break;
     case SDLK_2:
-      setSample(2, step);
+      setSample(2);
       break;
     case SDLK_3:
-      setSample(3, step);
+      setSample(3);
       break;
     case SDLK_4:
-      setSample(4, step);
+      setSample(4);
       break;
+
+    case SDLK_p:
+      play = !play;
+      step = 0;
+      break;
+    case SDLK_e:
+      setErease = true;
+      break;
+    case SDLK_o:
+      selectPattern = true;
+      break;
+    case SDLK_b:
+      selectBank = true;
+      break;
+
     default:
       break;
   }
diff --git a/C/loaders.cpp b/C/loaders.cpp
index 10a0b39..4514c07 100644
--- a/C/loaders.cpp
+++ b/C/loaders.cpp
@@ -68,6 +68,7 @@ void loadPattern(int patternNum) {
   matrix[0] = rows;
   matrix[1] = cols;
 
+
   for(int i=0; i<rows; i++) {
     for(int y=0; y<cols; y++) {
       printf("%d ", pattern[i][y]);
@@ -75,6 +76,8 @@ void loadPattern(int patternNum) {
     printf("\n");
   }
 
+  drawRects(0);
+
   fclose(fp);
   if(line) {free(line);}
   loadBank(bank);
diff --git a/C/main.cpp b/C/main.cpp
index 09ac52d..f604fef 100644
--- a/C/main.cpp
+++ b/C/main.cpp
@@ -13,28 +13,34 @@
 #define PATTERN_COLS 32
 
 Mix_Chunk* samples[NUM_WAVEFORMS];
+SDL_Window* window;
+SDL_Renderer* renderer;
+
 int pattern[PATTERN_ROWS][PATTERN_COLS];
 int matrix[] = {PATTERN_ROWS, PATTERN_COLS};
-
-#include "players.cpp"
+bool play = false;
+bool setErease = false;
+bool selectPattern = false;
+bool selectBank = false;
+int ereaseSample = 0;
+int step = 0;
+
+#include "draw.cpp"
 #include "loaders.cpp"
+#include "actions.cpp"
+#include "players.cpp"
 #include "inputs.cpp"
 
 int main(int argc, char** argv) {
 
   bool done = false;
-  bool play = true;
   int timer = 0;
-  int step = 0;
-  int stepDuration = 500;
-
-  SDL_Window* window;
-  SDL_Renderer* renderer;
+  int stepDuration = 200;
 
   SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO );
   atexit(SDL_Quit);
 
-  window = SDL_CreateWindow("Sonquencer", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 400, 300, 0);
+  window = SDL_CreateWindow("Sonquencer", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 600, 300, 0);
   renderer = SDL_CreateRenderer(window, -1, 0);
 
   SDL_SetRenderDrawColor(renderer, 100, 100, 100, 255);
@@ -58,7 +64,7 @@ int main(int argc, char** argv) {
             SDL_Quit();
             return 0;
           } else {
-            inputActions(event, step);
+            inputActions(event);
           }
           break;
         case SDL_QUIT:
@@ -66,8 +72,6 @@ int main(int argc, char** argv) {
           break;
         default:
           break;
-
-
       }
 
       if( !done ) { gotEvent = SDL_PollEvent(&event); }
@@ -75,11 +79,10 @@ int main(int argc, char** argv) {
     }
 
     if(play) {
-      playPattern(&timer, stepDuration, &step);
+      playPattern(&timer, stepDuration);
     }
   }
 
-
   for( int i = 0; i < NUM_WAVEFORMS; i++ ) {
     Mix_FreeChunk(samples[i]);
   }
diff --git a/C/patterns/pattern2 b/C/patterns/pattern2
index 38b80f1..f51d4ab 100644
--- a/C/patterns/pattern2
+++ b/C/patterns/pattern2
@@ -1,6 +1,6 @@
 bank      2
 rows      4
-10000101
-01000011
-00100001
-00010001
+1000010010000001
+0100001101000011
+0010000100100001
+0001000100010001
diff --git a/C/players.cpp b/C/players.cpp
index 544b71f..03b276e 100644
--- a/C/players.cpp
+++ b/C/players.cpp
@@ -1,24 +1,23 @@
 
-void playPattern(int *timer, int duration, int *step) {
+void playPattern(int *timer, int duration) {
   *timer = *timer >= duration ? 0 : *timer+1;
   usleep(1000);
 
   if(*timer == 0) {
+    drawRects(step-1);
     for(int i=0; i<matrix[0]; i++) {
-      if(pattern[i][*step-1] == 1) {
+      if(pattern[i][step-1] == 1) {
         Mix_PlayChannel(-1, samples[i], 0);
       }
     }
-    *step = *step < matrix[1] ? *step+1 : 1;
-  }
-}
 
-void setSample(int sample, int step) {
-  pattern[sample-1][step-1] = 1;
-  for(int i=0; i<matrix[0]; i++) {
-    for(int y=0; y<matrix[1]; y++) {
-      printf("%d ", pattern[i][y]);
+    step = step < matrix[1] ? step+1 : 1;
+
+    if(setErease && step == 1) {
+      for(int i=0; i<matrix[1]; i++) {
+        pattern[ereaseSample-1][i] = 0;
+      }
+      setErease = false;
     }
-    printf("\n");
   }
 }
diff --git a/C/sonquencer b/C/sonquencer
index a5d1c52..ba712d0 100755
Binary files a/C/sonquencer and b/C/sonquencer differ
diff --git a/README.md b/README.md
index 8e9c585..ccfba27 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,16 @@
-sonquencer
+# Sonquencer
+
+#### Keys (C version)
+
+| Key     | Options | Action        | Description                                             |
+| ------- | ------- | ------------- | ------------------------------------------------------- |
+| 1,2,3,4 |         | Play sample n | Set the sample when sequencer is playing or set options |
+| P       |         | Play/Stop     | Play/Stop Sequencer                                     |
+| E       | 1,2,3,4 | Erease        | Erease the sample line                                  |
+| O       | 1,2,3,4 | Open pattern  | Open the pattern by number                              |
+| B       | 1,2,3,4 | Open bank     | Open the bank by number                                 |
+|         |         |               |                                                         |
+|         |         |               |                                                         |
+|         |         |               |                                                         |
+|         |         |               |                                                         |
+