What is the total number of music genre/style in which the lyrics are a detective story?
CREATE TABLE "song_list" (
  "date" text,
  "album_name" text,
  "track" text,
  "track_title" text,
  "lyricist" text,
  "music_genre_style" text,
  "major_instrument_s" text,
  "lyrics_theme_style" text,
  "duration" text
);
SELECT COUNT("music_genre_style") FROM "song_list" WHERE "lyrics_theme_style"='Detective story';