@score_duration()

returns the total duration in beats of the musical events in the score.

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