Seattle Symphony showcased the talents of one of their own this past weekend, featuring principal cellist Efe Baltacıgil in a performance of Dvořák’s Cello Concerto in B Minor. A bustling Thursday night crowd at Benaroya Hall greeted the charismatic cellist, who has won many fans among Seattle audiences since his arrival in 2011. Though the Dvořák concerto seemed to be the highlight of the evening for many symphony-goers, the March 27 concert included two 20th century gems: Claude Debussy’s La Mer (“The Sea”) and Edgard Varèse’s Déserts.