diff --git a/src/instr_fm.cc b/src/instr_fm.cc
index 7d5c443..d591b01 100644
--- a/src/instr_fm.cc
+++ b/src/instr_fm.cc
@@ -4,6 +4,10 @@
 namespace Heck {
     namespace Instrument {
 
+        FM::FM(){
+            init();
+        }
+
         void FM::init()
         {
             osc.Init(samplerate);
diff --git a/src/instr_fm.hh b/src/instr_fm.hh
index f374d79..490f059 100644
--- a/src/instr_fm.hh
+++ b/src/instr_fm.hh
@@ -13,6 +13,8 @@ namespace Heck {
 
         class FM : public AbstractInstrument {
         public:
+            FM();
+
             void init();
 
             void trigger() override;
diff --git a/src/instr_kick.cc b/src/instr_kick.cc
index 0ea93ae..feb8f87 100644
--- a/src/instr_kick.cc
+++ b/src/instr_kick.cc
@@ -4,6 +4,10 @@
 namespace Heck {
     namespace Instrument {
 
+        Kick::Kick() {
+            init();
+        }
+
         void Kick::init()
         {
             osc.Init(samplerate);
diff --git a/src/instr_kick.hh b/src/instr_kick.hh
index eaea23d..1f28584 100644
--- a/src/instr_kick.hh
+++ b/src/instr_kick.hh
@@ -13,6 +13,7 @@ namespace Heck {
 
         class Kick : public AbstractInstrument {
         public:
+            Kick();
             void init();
 
             void trigger() override;
diff --git a/src/instr_noise.cc b/src/instr_noise.cc
index 943c9c4..f4f817b 100644
--- a/src/instr_noise.cc
+++ b/src/instr_noise.cc
@@ -4,6 +4,10 @@
 namespace Heck {
     namespace Instrument {
 
+        Noise::Noise() {
+            init();
+        }
+
         void Noise::init()
         {
             noise.Init();
diff --git a/src/instr_noise.hh b/src/instr_noise.hh
index 3dfd985..51431e0 100644
--- a/src/instr_noise.hh
+++ b/src/instr_noise.hh
@@ -13,6 +13,7 @@ namespace Heck {
 
         class Noise : public AbstractInstrument {
         public:
+            Noise();
             void init();
 
             void trigger() override;