CREATE TABLE "top_singles_of_1959" (
  "position" real,
  "artist" text,
  "song_title" text,
  "highest_position" real,
  "points" real
);

Question: what is the nme of the song performed by billy vaughn?
SQL: SELECT "song_title" FROM "top_singles_of_1959" WHERE "artist"='Billy Vaughn';