Believe it or not, some people prefer live music shows to live poetry shows. Some people even watch recordings of artists performing before an audience on platforms other than Button Poetry. It's true.
Many a shift at work I've heard coworkers and customers discussing various musicians whose concerts are up o Youtube, discussing various aspects of their performances. Choose a musician, or comedian, or, if you're going to be like that, poet, who has multiple concerts or, at least, clips from multiple performances up on Youtube (or Vevo, or w'evs). Take two clips from very different points in their career and compare and contrast them, go into detail about which you prefer and why.
For example, you might pick a Tina Turner concert from her Private Dancer Tour (1985) and one from Poland in 2000.
Write Or Die
Scott Woods's Twitter Prompts
Rachel Mckibbens' Prompt Blog
The 30/30 Prompt Blog
Asterisk And Sidebar Prompts