In the early days with Kim Deal perfectly offsetting Frank Black:
https://www.youtube.com/watch?v=I_aBmrYChfQ
Their anger and energy live was awesome
https://www.youtube.com/watch?v=4i6jtsCpImo
But then Frank Black with his massive ego sacked Kim Deal
Decades later they achieved that brilliance once again with the hypnotic Paz Lenchantin replacing Kim Deal on bass
"Amazing live performance! They have Joy Division level intensity"
https://www.youtube.com/watch?v=FiUNDeuBbi8
But then Frank Black sacked Paz too, and the Pixies are no longer great. They were awesome once though!