diff --git a/Classes/EventShortener.sc b/Classes/EventShortener.sc
index ac63085..c484248 100644
--- a/Classes/EventShortener.sc
+++ b/Classes/EventShortener.sc
@@ -49,8 +49,28 @@ EventShortener {
   *patternBuboEvent {
     arg pattern;
     var new_pattern = List();
-    new_pattern = new_pattern ++ [\type, 'buboEvent'];
+    var sp_position = nil;
+    var nb_position = nil;
 
+    // Check if the sp key already exists in the pattern
+    if (pattern.includes('sp'), {
+      pattern.do({ arg e, i;
+        if (e == 'sp', {
+          sp_position = i;
+        })
+      });
+    });
+
+    // Check if the nb key already exists in the pattern
+    if (pattern.includes('nb'), {
+      pattern.do({ arg e, i;
+        if (e == 'nb', {
+          nb_position = i;
+        })
+      });
+    });
+
+    new_pattern = new_pattern ++ [\type, 'buboEvent'];
     pattern.doAdjacentPairs({ | a, b, index |
       if (index % 2 == 0, {
         if (a === 'pat', {
@@ -67,10 +87,17 @@ EventShortener {
               });
             });
           ];
-          new_pattern = new_pattern ++ [
-            sp: Pfunc { |e| e.str ? "" },
-            nb: Pfunc { |e| e.num ? 0 }
-          ];
+          if (sp_position.notNil, {
+            new_pattern = new_pattern ++ [
+              sp: pattern[sp_position + 1],
+              nb: pattern[nb_position + 1],
+            ];
+          }, {
+            new_pattern = new_pattern ++ [
+              sp: Pfunc { |e| e.str ? "" },
+              nb: Pfunc { |e| e.num ? 0 }
+            ];
+          });
         }, {
           new_pattern = new_pattern ++ [a, b];
         });
diff --git a/dev_sessions/chasing_bugs.scd b/dev_sessions/chasing_bugs.scd
index 51cd9ac..c358fa2 100644
--- a/dev_sessions/chasing_bugs.scd
+++ b/dev_sessions/chasing_bugs.scd
@@ -2,11 +2,20 @@
 Boot(samplePath: "/Users/bubo/.config/livecoding/samples");
 )
 
+// ================ SAMPLING (~SP et ~NB) ================
+
 // TEST: [X] ça passe
 (
 ~basic => [pat: "kick snare"];
 ~basic.play;
+~hat => [pat: "hat:2 hat:4!3"];
+~hat.play;
+)
 
+// TEST: [X] ça passe
+(
+~basic => [pat: "kick:4 snare:8"];
+~basic.play;
 ~hat => [pat: "hat:2 hat:4!3"];
 ~hat.play;
 )
@@ -18,10 +27,95 @@ Boot(samplePath: "/Users/bubo/.config/livecoding/samples");
   nb: [0, 2, 3].pseq(inf),
 ];
 ~basic.play;
-)
-
-(
-~hat => [sp: "hat", dur: 1/2, nb: [0, 2, 3].pseq(inf)];
+~hat => [sp: ["hat", "casio"].pseq(inf), dur: 1/2, nb: [0, 2, 3].pseq(inf)];
 ~hat.play;
 )
 
+
+// TEST: [X] ça passe
+(
+~basic => [
+  sp: ["kick", "synthi"].pseq(inf),
+  nb: 10, // Change moi
+  pat: "[0 7 0 7]/2",
+  test: Pfunc {
+    |e|
+    e.postln;
+    e
+  }
+];
+~basic.play;
+)
+
+// ================ SYNTHETISEURS TYPE PBIND ================
+
+// TEST: [X] ça passe
+(
+~instrument => [
+  instrument: 'Panalog',
+  octave: 6,
+  degree: [0, 4].pseq(inf)
+];
+~instrument.play;
+)
+
+
+// TEST: [X] ça passe
+(
+~instrument => [
+  instrument: 'Panalog',
+  pat: "0 2 3 4 5",
+  octave: 6,
+];
+~instrument.play;
+)
+
+// TEST: [X] ça passe
+(
+~instrument => [
+  instrument: 'Panalog',
+  deg: "0 2 3 4".p,
+  octave: 6,
+];
+~instrument.play;
+)
+
+// ================ SYNTHETISEURS TYPE PMONO ================
+
+// NOTE: SynthDef de test
+(
+SynthDef('acid', {
+  var freq = \freq.kr(100).varlag(\glide.kr(0.05));
+  var signal = PulseDPW.ar([freq / 2, freq / 1.99])
+    + SawDPW.ar([freq, freq / 1.99]);
+  var env = Env.perc(
+    \attack.kr(0.1),
+    \release.kr(0.125)).ar(0);
+  var synth = signal * env;
+  synth = RLPF.ar(signal,
+    \ffreq.kr(1500).lag(\glide.kr),
+    \res.kr(0.2).lag(\glide.kr));
+  synth = Pan2.ar(synth, \pan.kr(0));
+  OffsetOut.ar(\out.kr(0), synth * \amp.kr(-24.dbamp));
+}).add;
+)
+
+// TEST: [X] ça passe !
+(
+~acid -> ['acid', dur: (1/2), amp: 0.5, pat: "[0 2 4 5]/2"];
+~acid.play;
+)
+
+// TEST: [X] ça passe !
+(
+~acid -> ['acid', dur: (1/2), amp: 0.5, degree: [0, 4].pseq(inf)];
+~acid.play;
+)
+
+// TEST: [X] ça passe !
+(
+~acid -> ['acid', dur: (1/2), amp: 0.5, degree: "0 2 3 4".p];
+~acid.play;
+)
+
+// ================ SCRATCHPAD ================