@make_pitch_tab()
@make_pitch_tab(start:numeric)
@make_pitch_tab(start:numeric, stop:numeric)
returns a tab whose i th element is the vector of pitches to the i
th musical event in the score.  A NOTE corresponds to a tab of size 1,
and a CHORDS with n pitches to a tab of size n. 
Grace notes are not counted.
Called with no arguments, the events considered are all the events in
the score.  With a start, only the events whose position in beats is
greater than start are considered. If a stop is specified, all events
must have a position in beats between start and stop.
Grace notes do not appear in the tab.
Examples:
       NOTE D6 1    
       NOTE C7 0    
       NOTE D6 1/2  
       NOTE C7 1/5
       CHORD (D1 A7 Eb7) 1/8 
       TRILL (CC6 D7 A7) 1/8 event6
@make_pitch_tab returns:
       TAB[ TAB[8600.0],
            TAB[8600.0],
            TAB[9600.0],
            TAB[2600.0, 0500.0, 9900.0],
            TAB[1206.0, 9800.0, 10500.0] ]
See also the Antescofo Score @bach_score @make_bpm_map @make_bpm_tab @make_duration_map @make_duration_tab @make_label_bpm @make_label_duration @make_label_pitches @make_label_pos @make_pitch_tab @make_score_map @score_tempi @score_duration @specified_duration