Stan card aside, Beyonce has shown the most longevity because she's been able to stay relevant without over saturating the music market. I mean let's look at the stats:
Beyonce: 4 albums in 10 years
Lady Gaga: 3 albums in 3 years
Rihanna: 6 albums in 6 years
Ke$ha: 2 albums in 1 year
The way these girls are trying to stay relevant is sad. And because of that they'll burn out faster. In regards to the question, I think Gaga will burn out fastest since she's exhausted most her gimmicks so early on in her career. What's next for her if she can't pander to the gehs?
Yea I went there, but did I lie?