diff --git a/build.conf.example b/build.conf.example
index a6f88ca..8888efa 100644
--- a/build.conf.example
+++ b/build.conf.example
@@ -3,7 +3,7 @@
 
 # The program to compile and flash
 # the name of the main cxx file without the prefix 'main_'
-TARGET ?= perkons
+TARGET ?= osp
 
 DEBUG ?= 0
 
diff --git a/src/Makefile b/src/Makefile
index f266621..7419e9f 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,6 +1,6 @@
 -include ../build.conf
 
-TARGET ?= perkons
+TARGET ?= osp
 DEBUG ?= 0
 LIBDAISY_DIR ?= ../../heck_libDaisy
 DAISYSP_DIR ?= ../../heck_DaisySP
diff --git a/src/globals.hh b/src/globals.hh
index 872bbca..02d5485 100644
--- a/src/globals.hh
+++ b/src/globals.hh
@@ -1,5 +1,5 @@
-#ifndef HECK_DAISY_GLOBALS_HH
-#define HECK_DAISY_GLOBALS_HH
+#ifndef HECK_OSP_GLOBALS_HH
+#define HECK_OSP_GLOBALS_HH
 
 #include <cstdint>
 #include "daisy_seed.h"
diff --git a/src/instr_bd2.hh b/src/instr_bd2.hh
index c494654..a556f48 100644
--- a/src/instr_bd2.hh
+++ b/src/instr_bd2.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_BD2_HH
-#define HECK_DAISY_INSTR_BD2_HH
+#ifndef HECK_OSP_INSTR_BD2_HH
+#define HECK_OSP_INSTR_BD2_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/instr_fm.hh b/src/instr_fm.hh
index 978af1e..7252543 100644
--- a/src/instr_fm.hh
+++ b/src/instr_fm.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_FM_HH
-#define HECK_DAISY_INSTR_FM_HH
+#ifndef HECK_OSP_INSTR_FM_HH
+#define HECK_OSP_INSTR_FM_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/instr_grainlet.hh b/src/instr_grainlet.hh
index a1a7573..6a8245d 100644
--- a/src/instr_grainlet.hh
+++ b/src/instr_grainlet.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_GRAINLET_HH
-#define HECK_DAISY_INSTR_GRAINLET_HH
+#ifndef HECK_OSP_INSTR_GRAINLET_HH
+#define HECK_OSP_INSTR_GRAINLET_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/instr_hihat.hh b/src/instr_hihat.hh
index d47d86b..4a6f870 100644
--- a/src/instr_hihat.hh
+++ b/src/instr_hihat.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_HIHAT_HH
-#define HECK_DAISY_INSTR_HIHAT_HH
+#ifndef HECK_OSP_INSTR_HIHAT_HH
+#define HECK_OSP_INSTR_HIHAT_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/instr_abstract.hh b/src/instr_interface.hh
similarity index 81%
rename from src/instr_abstract.hh
rename to src/instr_interface.hh
index 0bac8e9..07e4f61 100644
--- a/src/instr_abstract.hh
+++ b/src/instr_interface.hh
@@ -1,5 +1,5 @@
-#ifndef HECK_DAISY_PERKONS_INSTR_ABSTRACT
-#define HECK_DAISY_PERKONS_INSTR_ABSTRACT
+#ifndef HECK_OSP_INSTR_ABSTRACT
+#define HECK_OSP_INSTR_ABSTRACT
 
 #include "globals.hh"
 
@@ -23,4 +23,4 @@ namespace Heck {
 } // namespace Heck
 
 
-#endif // HECK_DAISY_PERKONS_INSTR_ABSTRACT
+#endif // HECK_OSP_INSTR_ABSTRACT
diff --git a/src/instr_kick.hh b/src/instr_kick.hh
index 0ae516f..5967df8 100644
--- a/src/instr_kick.hh
+++ b/src/instr_kick.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_KICK_HH
-#define HECK_DAISY_INSTR_KICK_HH
+#ifndef HECK_OSP_INSTR_KICK_HH
+#define HECK_OSP_INSTR_KICK_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/instr_noise.hh b/src/instr_noise.hh
index 6dcc241..e705791 100644
--- a/src/instr_noise.hh
+++ b/src/instr_noise.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_NOISE_HH
-#define HECK_DAISY_INSTR_NOISE_HH
+#ifndef HECK_OSP_INSTR_NOISE_HH
+#define HECK_OSP_INSTR_NOISE_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/instr_zosc.hh b/src/instr_zosc.hh
index b41fef9..3082916 100644
--- a/src/instr_zosc.hh
+++ b/src/instr_zosc.hh
@@ -1,7 +1,7 @@
-#ifndef HECK_DAISY_INSTR_ZOSC_HH
-#define HECK_DAISY_INSTR_ZOSC_HH
+#ifndef HECK_OSP_INSTR_ZOSC_HH
+#define HECK_OSP_INSTR_ZOSC_HH
 
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "daisy_seed.h"
 #include "daisysp.h"
 
diff --git a/src/main_perkons.cc b/src/main_osp.cc
similarity index 99%
rename from src/main_perkons.cc
rename to src/main_osp.cc
index 140f704..99baaf0 100644
--- a/src/main_perkons.cc
+++ b/src/main_osp.cc
@@ -1,4 +1,3 @@
-// Hecks perkons extension
 #include <array>
 #include <memory>
 
@@ -7,7 +6,7 @@
 #include "utils.hh"
 #include "midiclock.hh"
 #include "sequencer.hh"
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "instr_kick.hh"
 #include "instr_noise.hh"
 #include "instr_fm.hh"
diff --git a/src/midiclock.hh b/src/midiclock.hh
index cf2c28c..7a926ba 100644
--- a/src/midiclock.hh
+++ b/src/midiclock.hh
@@ -1,5 +1,5 @@
-#ifndef HECK_PERKONS_MIDICLOCK_HH
-#define HECK_PERKONS_MIDICLOCK_HH
+#ifndef HECK_OSP_MIDICLOCK_HH
+#define HECK_OSP_MIDICLOCK_HH
 
 namespace Heck {
     struct MidiClock {
diff --git a/src/sequencer.hh b/src/sequencer.hh
index 28cff80..20f6032 100644
--- a/src/sequencer.hh
+++ b/src/sequencer.hh
@@ -1,5 +1,5 @@
-#ifndef HECK_PERKONS_SEQUENCER_HH
-#define HECK_PERKONS_SEQUENCER_HH
+#ifndef HECK_OSP_SEQUENCER_HH
+#define HECK_OSP_SEQUENCER_HH
 
 #include <vector>
 #include "daisy_seed.h"
diff --git a/src/track.hh b/src/track.hh
index 362f32c..dedf108 100644
--- a/src/track.hh
+++ b/src/track.hh
@@ -1,8 +1,8 @@
-#ifndef HECK_PERKONS_TRACK_HH
-#define HECK_PERKONS_TRACK_HH
+#ifndef HECK_OSP_TRACK_HH
+#define HECK_OSP_TRACK_HH
 
 #include "daisysp.h"
-#include "instr_abstract.hh"
+#include "instr_interface.hh"
 #include "utils.hh"
 #include "globals.hh"
 namespace dsp = daisysp;
diff --git a/src/types.hh b/src/types.hh
index 2e7f7d0..b173ff1 100644
--- a/src/types.hh
+++ b/src/types.hh
@@ -1,5 +1,5 @@
-#ifndef HECK_DAISY_TYPES_HH
-#define HECK_DAISY_TYPES_HH
+#ifndef HECK_OSP_TYPES_HH
+#define HECK_OSP_TYPES_HH
 
 #include <cstdint>
 #include "daisy_seed.h"
diff --git a/src/utils.hh b/src/utils.hh
index 35a5815..232e20e 100644
--- a/src/utils.hh
+++ b/src/utils.hh
@@ -1,5 +1,5 @@
-#ifndef HECK_DAISY_UTILS_HH
-#define HECK_DAISY_UTILS_HH
+#ifndef HECK_OSP_UTILS_HH
+#define HECK_OSP_UTILS_HH
 
 #include "daisy_seed.h"
 #include "globals.hh"
@@ -12,4 +12,4 @@ namespace Heck {
     float scalen_center_range(float val, float center, float range);
 } // namespace Heck
 
-#endif // HECK_DAISY_UTILS_HH
\ No newline at end of file
+#endif // HECK_OSP_UTILS_HH
\ No newline at end of file