CREATE TABLE "table1_21501511_1" (
  "week_num" text,
  "theme" text,
  "song_choice" text,
  "original_artist" text,
  "order_num" text,
  "result" text
);

Question: What was Lambert's song choice in the top 13?
SQL: SELECT "song_choice" FROM "table1_21501511_1" WHERE "week_num"='Top 13';

Question: What order did Lambert perform in the top 11?
SQL: SELECT "order_num" FROM "table1_21501511_1" WHERE "week_num"='Top 11';

Question: What week was themed disco?
SQL: SELECT "week_num" FROM "table1_21501511_1" WHERE "theme"='Disco';