rihanna will never be irrelevant thus because she adapts to the changes that music is evolving. the sound of music is changing. the reason why 4 was not a good album commercially or well singles wise i should say is because 4 is more an rnb album times has changed now dance pop is in . all i can say is if rihanna keeps evolving her music with my genereation(teens) then its merely impossible for her and any other artist to become irrelevant