@score_tempi()
returns a tab of couples (i.e. tab of size 2). The ith elements correspond to the ith BPM changes in the score. The value of its element is the tab [position, BPM].
For example
       NOTE D6 1    event1
       NOTE C7 0    event2
       BPM 120
       NOTE D6 2  event3
       NOTE C7 2
       CHORD (D1 A7 Eb7) 4 event5
       BPM 30
       trill (CC6 D7 A7) 2 event6
@make_bpm_map() will return:
       TAB[  TAB[0.0, 60.0],
             TAB[1.0, 120.0],
         TAB[1.5, 30.0]  ]
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