Toxic by Britney Spears is basically built on secondary dominants and tritone substitutions (i-VI7-II7-V7 becomes i-IIIb7-II7-IIb7), so they definitely have the

Toxic by Britney Spears is basically built on secondary dominants and tritone substitutions (i-VI7-II7-V7 becomes i-IIIb7-II7-IIb7), so they definitely have their place in pop music too. Whether the composers thought about it that way, we can't know, but in any case what matters is whether the bass line sounds good.