IM SORRY.. BUT I GET THE OBJECTIVE AND THE TERMS THEY USE TO MAKE THE LIST . BUT WHAT I DONT GET IS WHY THEY DIDNT INCLUDE AMY WINEHOUSE, SHANIA TWAIN OR MARIAH CAREY!!!! and i am not against lady gaga.. but BTW higher than jagged littke pill or pj harvey or hole???? nonsense... another thing.. i have read some of you fighting and arguing about album sales. this list did not consider album sales. album sales is not a synonym of good quality always