diff --git a/doc/notes.txt b/doc/notes.txt
index 08bf9b2..2c36b42 100644
--- a/doc/notes.txt
+++ b/doc/notes.txt
@@ -39,6 +39,42 @@ Equipment List:
 6) Tape for contact mics 
 7) Scissors for contact mics
 
+=============================================================================
+Take sequence builder development notes.
+
+1. The MIDI file implementation should not overload the use of the
+   'dtick' field in cmMidiTrackMsg_t to contain multiple possible
+   meanings of time (e.g. tick,microsecond,seconds,samples etc) or at
+   the very least the current meaning of the field should be held as a
+   flag in the MIDI file.  As it i s the field is ambiguous and it can
+   be difficult to tell what the meaning of the field is in any given
+   algorithm that processes it.
+
+2. Sostenuto pedal should be added to the score and then implemented
+   in cmMidiFileCalcDurations().  When the sostenuto pedal is down
+   only notes that are playing when the pedal is depressed are
+   sustained.
+
+3 As current written the UI control architecture supports only one
+  user interface element (kcApp.h::ctl_t) per DSP instance. This
+  limitation is manifest in kcApp.h::find_ctl() which has no way
+  to distiguish which of multiple ctl_t's to return from a given
+  instId. In fact this problem probably goes deeper into the 
+  way that Fl_Widgets and DSP instances are assocated.
+
+4. TODO:
+  a) When pedal events are inserted via cmGrTksrFltk the inserted event
+  is shifted backward in time.
+
+  b) Test the save/restore function of TakeSeqBldr render takes.
+  c) TakeSeqBldr load should be threaded.
+  d) Eliminate direct communication between cmGrTksb/rFltk and cmTakeSeqBldr.
+  All communcation should be serialized.
+  e) Run with valgrind to see if cmGrGksb/rFltk has any obvious bugs.
+  f) bar select / take select logic is difficult.
+  g) There is often a NAN shown in the position select display UI.
+  h) Add bars to the cmGrTksrFltk view.
+
 =============================================================================
 CHANGES TO SIMULATE MODE TO ALLOW MIDI FILE PLAYER TO DRIVE SCORE
 FOLLOWER DIRECTLY RATHER THAN FEEDING SCORE FOLLOWER FROM MIDI INPUT PORT:
@@ -57,6 +93,12 @@ BACK TO:
 
 
 =============================================================================
+Session Notes 3/28/15
+1. 34-38-49-54 (good take sequence)
+2. Try combining bins in the SpecDist algorithm as a variaion on the spectral distortion algorithm.
+   For example the bins coud be combined using a Bark grouping.
+
+
 Session Notes 12/12/14
 1. Write a tool to create multiple MIDI preformances of the piece.
   a) Map each segment to the score using the score follower.
@@ -688,8 +730,7 @@ Sequence Editor Design
        Enable/Disable selected events.
         
      
- 
-
+    
 
 
 =============================================================================