diff --git a/1sec.wav b/1sec.wav
deleted file mode 100644
index 2f3bfdb..0000000
Binary files a/1sec.wav and /dev/null differ
diff --git a/main.cmi b/main.cmi
index 764570c..9db80ab 100644
Binary files a/main.cmi and b/main.cmi differ
diff --git a/main.cmx b/main.cmx
index 42b02b3..c3e5123 100644
Binary files a/main.cmx and b/main.cmx differ
diff --git a/main.ml b/main.ml
index 67c853d..6ff4702 100644
--- a/main.ml
+++ b/main.ml
@@ -75,7 +75,7 @@ let default_sphere = {
   score = 0 ;
 } ;;
 
-let univ_g = 800.0 ;;
+let univ_g = 750.0 ;;
 let pi = 3.14159265358979343 ;;
 
 let winBL = {
@@ -110,7 +110,7 @@ let playbeep id =
   while true do
     if beep_boop.(id) then begin
       beep_boop.(id) <- false ;
-      ignore (Unix.system "./sound 1sec.wav") ;
+      ignore (Unix.system "./sound wah/scored_hit.wav") ;
     end;
     Unix.sleepf 0.005 ;
   done;;
@@ -121,7 +121,9 @@ let beep_list = Array.init n_threads (fun k -> Thread.create playbeep k) ;;
 
 let play_music () =
   while true do
-    ignore (Unix.system "./sound 1sec.wav") ;
+    ignore (Unix.system "./sound wah/wah_metal.wav") ;
+    ignore (Unix.system "./sound wah/wah_eurobeat.wav") ;
+    ignore (Unix.system "./sound wah/wah_hardcore.wav") ;
   done;;
 
 let theme_thr = Thread.create play_music () ;;
@@ -339,6 +341,10 @@ let is_collision_p (b : ball) (poly : polygon) (dt : float) =
       | ReturnInt b -> b 
   end ;;
 
+let playbeep () = 
+  beep_boop.(!beep_id) <- true ;
+  beep_id := (!beep_id+1) mod n_threads ;;
+
 let is_collision_s (b : ball) (s : sphere) (dt : float) =
   if not (is_in_bounding_box_s b s) then
     false
@@ -354,6 +360,9 @@ let update_ball_data (b : ball) (polys : polygon array) (spheres : sphere array)
     if hit <> -1 then begin
       score := !score + polys.(p).score ;
 
+      if polys.(p).score > 0 then
+        playbeep () ;
+
       (* apply normal reaction force *)
       let hit2 = (hit +1) mod (Array.length polys.(p).vertexes) in
       let proj = return_proj_of_point b.xy polys.(p).vertexes.(hit) polys.(p).vertexes.(hit2) in
@@ -376,8 +385,8 @@ let update_ball_data (b : ball) (polys : polygon array) (spheres : sphere array)
     if is_collision_s b spheres.(s) dt then begin
       score := !score + spheres.(s).score ;
 
-      beep_boop.(!beep_id) <- true ;
-      beep_id := (!beep_id+1) mod n_threads ;
+      if spheres.(s).score > 0 then
+        playbeep () ;
 
       (* apply normal reaction force *)
       let proj_n = vect_normalize_2D (vect_diff_2D b.xy spheres.(s).center) in
@@ -645,10 +654,6 @@ let simulate (data : polygon dynamic) (dats : sphere dynamic) =
     auto_synchronize false ;
     clear_graph () ;
 
-    set_color black ;
-    set_line_width 4 ;
-    draw_integer 600 770 !score 50 ;
-
     set_line_width 1 ;
     for d = 0 to data.len -1 do
       draw_polygon data.tab.(d)
@@ -661,6 +666,10 @@ let simulate (data : polygon dynamic) (dats : sphere dynamic) =
     set_color (rgb 128 128 32) ;
     draw_float 25 770 (round (!ctime -. stime) 3) 25 ;
 
+    set_color black ;
+    set_line_width 4 ;
+    draw_integer 600 770 !score 50 ;
+
     auto_synchronize true ;
     Unix.sleepf 0.005 ;
 
@@ -678,6 +687,7 @@ dyn_add polygons (create_polygon [|(1150, 0); (1200, 0); (1200, 775); (1150, 775
 dyn_add polygons (create_polygon [|(50, 0); (50, 200); (500, 25); (500, 0)|] 1.0 0 32 32 255) ;;
 dyn_add polygons (create_polygon [|(1150, 0); (1150, 200); (700, 25); (700, 0)|] 1.0 0 32 32 255) ;;
 dyn_add polygons (create_polygon [|(500, 0); (700, 0); (700, 25); (500, 25)|] 1.0 (-10) 192 64 64) ;;
+dyn_add polygons (create_polygon [|(0, 750); (1200, 750); (1200, 800); (0, 800)|] 1.0 25 64 192 64) ;;
 
 let spheres = dyn_create default_sphere ;;
 dyn_add spheres (create_sphere 200 400 20. 1. 5 220 32 220) ;;
diff --git a/main.o b/main.o
index 8ae798e..5ea016e 100644
Binary files a/main.o and b/main.o differ
diff --git a/pinball b/pinball
index c7df3b0..86d07d2 100755
Binary files a/pinball and b/pinball differ
diff --git a/playsound.c b/playsound.c
index d9701a0..025d52a 100644
--- a/playsound.c
+++ b/playsound.c
@@ -14,7 +14,7 @@ int main(int argc, char** argv) {
     SDL_AudioDeviceID deviceId = SDL_OpenAudioDevice(NULL, 0, &wavSpec, NULL, 0);
     int success = SDL_QueueAudio(deviceId, wavBuffer, wavLength);
     SDL_PauseAudioDevice(deviceId, 0);
-    usleep((int)((wavLength)/88200.0*100000.0)) ;
+    usleep((int)((wavLength)/88200.0*100000.0));
     SDL_CloseAudioDevice(deviceId);
     SDL_FreeWAV(wavBuffer);
     SDL_Quit();
diff --git a/wah/scored_hit.wav b/wah/scored_hit.wav
new file mode 100644
index 0000000..97a263b
Binary files /dev/null and b/wah/scored_hit.wav differ
diff --git a/wah/wah_eurobeat.wav b/wah/wah_eurobeat.wav
new file mode 100644
index 0000000..f5a7a3d
Binary files /dev/null and b/wah/wah_eurobeat.wav differ
diff --git a/wah/wah_hardcore.wav b/wah/wah_hardcore.wav
new file mode 100644
index 0000000..4fe0a8b
Binary files /dev/null and b/wah/wah_hardcore.wav differ
diff --git a/wah/wah_metal.wav b/wah/wah_metal.wav
new file mode 100644
index 0000000..aae5253
Binary files /dev/null and b/wah/wah_metal.wav differ