diff --git a/main.cpp b/main.cpp
index 33a163e..4345894 100755
--- a/main.cpp
+++ b/main.cpp
@@ -15,6 +15,7 @@
 
 char note_names[12][3] = { "C ", "C#", "D ", "D#", "E ", "F ", "F#", "G ", "G#", "A ", "A#", "B " };
 Uint16 pattern[4][64];
+bool muted[4] = { false, false, false, false };
 
 int selected_channel = 0;
 int selected_row = 0;
@@ -32,6 +33,13 @@ const char get_hex(const uint8_t num) {
     return hexstr[num];
 }
 
+char zero_padded[3] = "00";
+const char* get_zero_padded(const uint8_t num) {
+    zero_padded[0] = 48 + int(num / 10);
+    zero_padded[1] = 48 + (num % 10);
+    return zero_padded;
+}
+
 int main(int argc, char* argv[]) {
     pattern[0][0] = (34<<10) + (2<<8) + (7<<4) + 5;
     SDL_Init(SDL_INIT_EVERYTHING);
@@ -91,10 +99,10 @@ int main(int argc, char* argv[]) {
             if (sdlEvent.type == SDL_QUIT) { exit = true; break;}
             if (sdlEvent.type == SDL_MOUSEBUTTONDOWN) {
                 if (sdlEvent.button.button == SDL_BUTTON_LEFT) {
-                    if ((sdlEvent.button.x >= 3) && (sdlEvent.button.x <= 139) && (sdlEvent.button.y >= 14) && (sdlEvent.button.y <= 239) ) {
+                    if ((sdlEvent.button.x >= 13) && (sdlEvent.button.x <= 149) && (sdlEvent.button.y >= 14) && (sdlEvent.button.y <= 239) ) {
                         selected_row = scroll + int((sdlEvent.button.y-14)/7);
-                        selected_channel = (sdlEvent.button.x-3)/35;
-                        int part_pos = (sdlEvent.button.x-3)-(selected_channel*35);
+                        selected_channel = (sdlEvent.button.x-13)/35;
+                        int part_pos = (sdlEvent.button.x-13)-(selected_channel*35);
                         if (part_pos <= 10) {
                             selected_part = 0;
                         } else if (part_pos <= 15) {
@@ -107,10 +115,15 @@ int main(int argc, char* argv[]) {
                             selected_part = 4;
                         }
                     }
+                    for (int i=0; i<4; ++i) {
+                        if ((sdlEvent.button.x >= 12+i*35) && (sdlEvent.button.x <= 45+i*35) && (sdlEvent.button.y >= 2) && (sdlEvent.button.y <= 13) ) {
+                            muted[i] = not muted[i];
+                        }
+                    }
                 }
             }
             if (sdlEvent.type == SDL_MOUSEWHEEL) {
-                scroll -= sdlEvent.wheel.y;
+                scroll -= sdlEvent.wheel.y*4;
                 if (scroll < 0) scroll = 0; else if (scroll > 32) scroll = 32;
             }
             if (sdlEvent.type == SDL_KEYDOWN) {
@@ -238,17 +251,20 @@ int main(int argc, char* argv[]) {
             }
         }
         draw_clear(color_dark_grey);
-        draw_fill(3, 14, 33, 225, color_black);
-        draw_inset(2, 13, 34, 226, color_light_peach, color_dark_blue);
-        draw_fill(38, 14, 33, 225, color_black);
-        draw_inset(37, 13, 34, 226, color_light_peach, color_dark_blue);
-        draw_fill(73, 14, 33, 225, color_black);
-        draw_inset(72, 13, 34, 226, color_light_peach, color_dark_blue);
-        draw_fill(108, 14, 33, 225, color_black);
-        draw_inset(107, 13, 34, 226, color_light_peach, color_dark_blue);
+        draw_fill(13, 14, 33, 225, color_black);
+        draw_inset(12, 13, 34, 226, color_light_peach, color_dark_blue);
+        draw_fill(48, 14, 33, 225, color_black);
+        draw_inset(47, 13, 34, 226, color_light_peach, color_dark_blue);
+        draw_fill(83, 14, 33, 225, color_black);
+        draw_inset(82, 13, 34, 226, color_light_peach, color_dark_blue);
+        draw_fill(118, 14, 33, 225, color_black);
+        draw_inset(117, 13, 34, 226, color_light_peach, color_dark_blue);
         //draw_dotted(4, 71, 35, color_lavender);
 
-        int xp = 4, yp = 15;
+        for (int y=0; y<32; ++y) {
+            draw_string(get_zero_padded(y+scroll), 2, 15+y*7, color_dark_blue);
+        }
+        int xp = 14, yp = 15;
         for (int x=0; x<4; ++x) {
             yp = 15;
             for (int y=0; y<32; ++y) {
@@ -283,7 +299,7 @@ int main(int argc, char* argv[]) {
             }
             xp += 35;
         }
-        //draw_string("......", 4, 15, color_dark_blue);
+        //draw_string(get_zero_padded(0), 2, 15, color_dark_blue);
         //draw_string("......", 38, 15, color_dark_blue);
         /*int last_x = 0, last_y = 120;
         for (int x=0; x<1102; ++x) {
@@ -292,8 +308,19 @@ int main(int argc, char* argv[]) {
             last_x = x; last_y = y;
         }*/
         
-        //draw_string("HOLA", 11, 11, color_black);
-        //draw_string("HOLA", 10, 10, color_white);
+        for (int i=0; i<4; ++i) {
+            if (muted[i]) {
+                draw_inset(12+i*35, 2, 33, 11, color_light_peach, color_dark_blue);
+                //draw_string("MUTE", 20+i*35, 6, color_black);
+                draw_string("MUTE", 19+i*35, 5, color_light_grey);
+            } else {
+                draw_outset(12+i*35, 2, 33, 11, color_light_peach, color_dark_blue);
+                draw_string("MUTE", 20+i*35, 6, color_black);
+                draw_string("MUTE", 19+i*35, 5, color_white);
+            }
+        }
+
+
         draw_present();
 
         //SDL_QueueAudio(sdlAudioDevice, &beeps[0], SOUND_SIZE_IN_BYTES*8);