Los A-T Boyz will be performing live at the hottest concert in Tejano Music TTMA Fan Fair Fri March 19th at Gateway Stage Underneath the bridge - FREE ADMISSION. ALL AGES WELCOME. 5 Stages. Fun for the whole family. Texas Talent Musicians Association is a non-profit 501 (c) 3 organization whose purpose is to promote excellence in the Tejano Music Industry. Funds raised during this event will be used to further promote the Tejano Music Industry.