Even his signature instrument, Auto-Tune, has become as accepted an ingredient in hip-hop as the drum machine.
I hear artists who can sing like birds, others who would need to retire if Auto-Tune disappeared.
In fact, Britney Jean is least enjoyable when Spears, on occasion, reverts to the Auto-Tune crutch.
So why are we so surprised that, without the help of Auto-Tune, Spears sounds almost unrecognizable?
Compare the Auto-Tune way of singing today with the way Levi Stubbs of the Four Tops sang.