diff --git a/src/globals.hh b/src/globals.hh
index b2d00b6..fd86788 100644
--- a/src/globals.hh
+++ b/src/globals.hh
@@ -26,6 +26,10 @@ namespace Heck {
             constexpr int TRACK_MODE2 = 79;
             constexpr int TRACK_FILTERMODE = 80;
         } // namespace MIDI_Mapping
+
+        namespace Developer {
+            constexpr bool BOOT_WAIT_FOR_LOG = false;
+        }
     } // namespace Constants
 
     // Types
diff --git a/src/main_perkons.cc b/src/main_perkons.cc
index 4e0c92a..27ad23a 100644
--- a/src/main_perkons.cc
+++ b/src/main_perkons.cc
@@ -9,6 +9,7 @@
 #include "instr_kick.hh"
 #include "instr_noise.hh"
 #include "instr_fm.hh"
+#include "instr_grainlet.hh"
 
 namespace ld = daisy;
 namespace dsp = daisysp;
@@ -24,7 +25,7 @@ namespace Heck {
     static ld::MidiUartHandler midi{};
     static ld::FIFO<ld::MidiEvent, 128> event_log{};
 
-    Instrument::Noise instrument0{};
+    Instrument::Grainlet instrument0{};
     Instrument::FM instrument1{};
     Instrument::FM instrument2{};
     Instrument::Kick instrument3{};
@@ -197,7 +198,7 @@ namespace Heck {
     {
         hw.Configure();
         hw.Init();
-        hw.StartLog(true);
+        hw.StartLog(Constants::Developer::BOOT_WAIT_FOR_LOG);
 
         but_rec.Init(hw.GetPin(28), 0);
 
@@ -399,13 +400,13 @@ namespace Heck {
             clock_bar_new = clock.count_bar();
             if (clock_bar_new != clock_bar_current) {
                 clock_bar_current = clock_bar_new;
-                hw.PrintLine("Bar: %i", clock_bar_current);
+                //                hw.PrintLine("Bar: %i", clock_bar_current);
             }
 
             clock_16n_new = clock.count_16n();
             if (clock_16n_new != clock_16n_current) {
                 clock_16n_current = clock_16n_new;
-                hw.PrintLine("16n: %i", clock_16n_current);
+                //                hw.PrintLine("16n: %i", clock_16n_current);
                 sequencer.next_step();
             }