diff --git a/Array-ext.sc b/Array-ext.sc
index 96868cc..6de219b 100644
--- a/Array-ext.sc
+++ b/Array-ext.sc
@@ -1,26 +1,87 @@
 + Array {
 
+
+/*
+	 method  for substitution of a
+	 Number with a Structure
+	 inside a Structure:
+	 
+	 a = [3, 2, 1, 2, 1]
+	 a.subst(3, [2, 1, 2]) // ==> [ 3, 2, 1, [ 2, [ 2, 1, 2 ] ], 1 ]
+
+	 This actually is a subdivision of a element in our score representation
+
+*/
+
+	subst { arg index, thisStruct;
+
+		case
+		{thisStruct.isKindOf(Array)}
+		{^this.put(index, [this.at(index), thisStruct])}
+
+		{thisStruct.isKindOf(Number)}
+		{^this.put(index, thisStruct)};
+	}
 	
+
 	gdc {
 	
 		if(this.containsSeqColl.not, {
 			^this.reduce({arg a, b; a.asInteger gcd: b.asInteger})
 		});	
 	}
-	
-	
-	asRC {
 
+
+	max {
+
+		if(this.containsSeqColl.not, {
+			^this.reduce({arg a, b; a max: b})
+		});
+	}
+
+
+	min {
+
+		if(this.containsSeqColl.not, {
+			^this.reduce({arg a, b; a min: b})
+		});
+	}
+
+
+	minSize {
+		
+		^(this.collect {|i| i.size}).min
+	}
+
+
+	maxSize {
+
+		^(this.collect {|i| i.size}).max
+	}
+
+
+	asRhythmicCell {
+		^RhythmicCell(this)
+	}
+
+
+	asRC {
 		^RhythmicCell(this)
 	}
 	
 
+	asRhythmicSeq {
+
+		^RhythmicSeq(this)
+	}
+
+
 	asRS {
-		
+
 		^RhythmicSeq(this)
 	}
 
-	
+
 	addRC { arg thisRSeq;
 		
 		thisRSeq.put(this)
@@ -33,5 +94,6 @@
 			thisRSeq.put(i)
 		};
 	}
-	
+
+
 }
\ No newline at end of file
diff --git a/LilyRhythm.scd b/LilyRhythm.scd
index c1d6d56..78c1551 100644
--- a/LilyRhythm.scd
+++ b/LilyRhythm.scd
@@ -39,6 +39,8 @@ Post << f.([1,2,3,4], 5, 8)
 
 
 
+x.edit
+
 a = [
 	[3, [1, [2, [1, 1, [1, [1, 1, 1]], 1, 1, 1]], 1, 4, 2]],
 	[4, [2, [2, [1, 1, 1, 1, 1, 1]], 1, 4, 2]],
@@ -50,8 +52,39 @@ a = [
 	[4, [4, [2, [1, 1, 1, 1, 1, 1, 1]], 2, 4, 1]]
 ];	
 
-a.asRS.plot
+a.scramble.asRS
+
+[[1, 2, 3, 4], [[9, 1, 2], [8, 2, 3], [7, 4, 3]]].flop
+Help.gui
+
+
+x = RhythmicGroup2();
+x.putMeasure([2, 4, 3, 2, 3, 4, 2]);
+x.putStruct([[2, 1, 3, 2, 1], [1, 2, 1, 3, 2], [2, 1, 3, 2, 1, 2, 3, 2], [2, 1, 2, 3, 1]]);
+x.voiceArray
 
+x.structMatrix
+[
+	[2, 4, 3, 2, 3, 4, 2],
+	[[2, 1, 3, 2, 1], [1, 2, 1, 3, 2], [2, 1, 3, 2, 1, 2, 3, 2], [2, 1, 2, 3, 1]]
+].flop
+
+
+x.voice
+x.plot
+
+
+x.edit
+x.voiceArray
+
+x.structArray
+x.measureArray
+x.string
+
+(a.scramble.asRS)
+x.put(a.scramble.asRS)
+
+x.plot
 
 
 a = [[10,20],[30, 40, 50], 60, 70, [80, 90, 100]];
diff --git a/RhythmicGroup.sc b/RhythmicGroup.sc
index 0ec47ec..cd6adf0 100644
--- a/RhythmicGroup.sc
+++ b/RhythmicGroup.sc
@@ -33,7 +33,13 @@ RhythmicGroup : LilyShowableObj {
 	putArray { arg thisArray;
 
 		thisArray.do { |i|
-			this.put(i)
+			
+			case
+			{i.isKindOf(RhythmicSeq)}	
+			{this.put(i)}
+			
+			{i.isKIndOf(Array)}	
+			{this.put(i.asRS)};
 		}
 	}
 
@@ -45,7 +51,6 @@ RhythmicGroup : LilyShowableObj {
 		this.voiceArray.do { |i|
 			outString = outString ++ i.staffString
 		};
-
 		^outString
 	}
 
@@ -55,13 +60,9 @@ RhythmicGroup : LilyShowableObj {
 		var outString = String.new;
 
 		outString = outString ++ "\\score {\n\t<<\n\t\t";
-	
 		outString = outString ++ this.string;
-
 		//	outString = outString ++ "\n \\midi { } \n\t \\layout { }\n";
-
 		outString = outString ++ "\n  >> \n}\n\n";
-
 		^outString
 	
 	}
diff --git a/RhythmicSystem.sc b/RhythmicSystem.sc
index 0ad28ef..d789255 100644
--- a/RhythmicSystem.sc
+++ b/RhythmicSystem.sc
@@ -1,7 +1,7 @@
 /*
 
 # Init #
-
+"Ctk".include
 	a = RhythmicSystem([2, 3, 4]) // <--- Init with measures
 	a.putMeasure([2, 3, 2]) // <---you can add more later
 
@@ -70,7 +70,7 @@ RhythmicSystem : LilyShowableObj {
 
 
 	///////////////////////////////////////////
-	//	Manipulations an measures and struct //
+	//	Manipulations on measures and struct //
 	///////////////////////////////////////////
 
 	scrambleMeasures {