Houston Grand Opera is set to present “Giving Voice” for the third straight year. The showcase, which was created by tenor Lawrence Brownlee back in 2020, will feature Nicole Heaston alongside Blake Denson, Sun-Ly Pierce, William Guanbo Su, Peixin Chen,  Key’mon W. Murrah, Ryan Speedo Green, and pianists Kevin J. Miller and Bin Yu Sanford. The program will include arias, {…}