From their website:

"Virtuosi of Houston was formed to create a pre-professional climate and performance opportunities for Houston’s most focused young musicians (11 – 18 years of age) and to bring an expanded repertoire of chamber orchestra works to Houston audiences. A chamber orchestra with only 50-60 musicians, Virtuosi of Houston makes it possible for each musician to experience increased confidence, leadership, responsibility, and performance skills to move their musical ability to a higher level."