“Prokofiev’s Piano Concerto No. 2 in G minor is one of the most daunting works in the keyboard-orchestral repertoire. On Saturday night Lindsay Garritson, who has played widely in the United States and Europe and is a doctoral student at the University of Miami’s Frost School of Music, met the concerto on its own terms in a terrific performance with Thomas Sleeper conducting the Frost Symphony Orchestra at the UM Gusman Concert Hall.”