Question: What the title of the song when the result is to the Live Shows?
SQL: SELECT "Song title" FROM "1-29547777-1" WHERE "Result (Placement)" = 'to the Live Shows';

Question: What is the episode when the original performaer is Diana Ross?
SQL: SELECT "Episode" FROM "1-29547777-1" WHERE "Original performer" = 'Diana Ross';

Question: Who is the original performer when the episode is Casting?
SQL: SELECT "Original performer" FROM "1-29547777-1" WHERE "Episode" = 'Casting';