diff --git a/hello world/SC/CodeKlavier_hello_world_v_sampler.scd b/hello world/SC/CodeKlavier_hello_world_v_sampler.scd
index e191516..494269d 100644
--- a/hello world/SC/CodeKlavier_hello_world_v_sampler.scd	
+++ b/hello world/SC/CodeKlavier_hello_world_v_sampler.scd	
@@ -1,8 +1,6 @@
 // midi mappings:
 s.waitForBoot({
 "starting MIDI...".postln;
-MIDIIn.connectAll;
-s.sync;
 MIDIClient.init;
 s.sync;
 MIDIIn.connectAll;
diff --git a/hello world/SC/codespace.scd b/hello world/SC/codespace.scd
index 5c5f031..f476cc7 100644
--- a/hello world/SC/codespace.scd	
+++ b/hello world/SC/codespace.scd	
@@ -1,6 +1,15 @@
 // code space
 ~path = thisProcess.nowExecutingPath.dirname
-(~path ++ "/CodeKlavier_hello_world_v4.scd").load;
-//{2.do{(~path ++ "/toypiano_sampler.scd").load; 2.wait;};}.fork;
+
+
+// evaluate one from below, not both \\\
+
+// OPTION 1: to load internal toy pinao sampler (i.e. midi loopback):
+(~path ++ "/CodeKlavier_hello_world_v_sampler.scd").load;
+{2.do{(~path ++ "/toypiano_sampler.scd").load; 2.wait;};}.fork;
+
+// OPTION 2: to play with Robot Toy Piano instrument (i.e. midiout):
+(~path ++ "/CodeKlavier_hello_world_v_sampler.scd").load;
+
 
 //
diff --git a/hello world/SC/toypiano_sampler.scd b/hello world/SC/toypiano_sampler.scd
index 54dd7c9..9573f59 100644
--- a/hello world/SC/toypiano_sampler.scd	
+++ b/hello world/SC/toypiano_sampler.scd	
@@ -23,7 +23,7 @@ s.sync;
 // sampler node:
 MIDIdef.noteOn(\toypiano, {arg ...args;
   var midinote = args[1]-56;
-  //args.postln;
+  // args.postln;
   midinote.postln;
 if (midinote < 64 && midinote >= 0) {
   Ndef(midinote.asSymbol, {PlayBuf.ar(2, b[midinote], loop:0) * EnvGen.kr(Env.perc(0.01, 1.5))}).play(6, group: g);