Is that just to be a member of this club here, or is that a general principle? If an actor doesn't like a painting, should he/she provide a video copy of his/her last stage play to prove he/her deserves an opinion? Just here? Just musicians? OK. If the gal that sings 12th century Celtic songs and accompanies herself on Dulcimer, or the guy who plays Indian Classical Sitar, don't really like Eric Clapton's "whitebread and salad cream" impersonation of Freddie King, should they offer examples of their hobby to qualify for the right to an opinion? Who judges their work? All of us? Then, all of us have to supply samples of our performances, right? What gives us the qualification to judge the Celtic singer or the Sitar player? So, to be fair, we need two castes of TDPRI member: those who have a sample of their work on file ... they can be called the Brahmana, and the hoi polloi who haven't posted an audition ... we'll allow to them scrounge around politely asking questions, but not offering opinions on performances ... we'll call them the Shudra. Or, just let all consumers judge musical creations as they please.