What track number is 4:29 in length?
CREATE TABLE "track_listing" (
  "num" real,
  "title" text,
  "length" text,
  "writer" text,
  "composer" text,
  "arranger" text,
  "dialect" text,
  "mix_engineer" text
);
SELECT "num" FROM "track_listing" WHERE "length"='4:29';