Performing E. Séjourné’s Concerto for Marimba and Strings, marimbist Ji Su Jung (a member of The Percussion Collective) won the 43rd annual Houston Symphony Ima Hogg Competition, which earned her a gold medal, a $25,000 prize and a solo performance at Jones Hall with the Houston Symphony at the Donor and Subscriber Appreciation Concert on Wednesday, July 11 at 7:30 p.m. under the direction of Associate Conductor Robert Franz.