Task: Text to Code
Input (English): Step 1: find without repetition the SongId of Tracklists table.
Step 2: find without repetition the Title of Songs table whose Songs's SongId not one of the results of step 1
Output (English): SELECT DISTINCT T1.Title FROM Songs AS T1 WHERE T1.SongId NOT IN ( SELECT DISTINCT T2.SongId FROM Tracklists AS T2 )