This sounds seriously cool. A "Guitar and music education expo". Handmade instruments, equipment, art, and technology. At the @4240 Building, Saturday and Sunday.

"The Tritone Expo will present nearly 70 music-related companies, artists, and non-profits from the St. Louis area spread out over 40,000 square feet of exhibition space on two floors."

http://tritoneexpo.com/

http://www.stltoday.com/entertainment/m ... 3820b.html