Major Third กับ Perfect Five คืออะไร? ไม่จำเป็นต้องใช้ตารางทั้งหมด
What is the Major third with a Perfect fifth that is d?It is not neccessary to use all the tables.
 table_name_20:  major_third [ VARCHAR]  perfect_fifth [ VARCHAR] 
SELECT major_third FROM table_name_20 WHERE perfect_fifth = "d"