There are more active members in TGMM then I but we hear this all the time as a question.
The letters you'd never guess... and Trad Gang are not in the answer of TGMM...
It is NOT some sort of secret society, but the originator thought it would be valuable to have folks "ante up" the "dues" to St. Judes of $150 for a lifetime membership, before they learned what it stood for...
It's not a biggie or something earth shattering, just a fun wee bit of something to keep a tiny bit of mystery involved and entice folks to belly up to the bar and donate to St. Judes during the annual fest.
Daniel, I'm sure if you wished to donate strings, before you get a chance to jump in and becoming a life member, you could easily contact Bud or the O. P and volunteer your wares...