ゴーシュの(ごーしゅの)成長に(せいちょうに)驚き(おどろき)、「アンコール(あんこーる)として一人で(ひとりで)舞台に(ぶたいに)立って(たって)弾いて(ひいて)こい」と指示した

Finally, the day of the orchestra's grand concert arrived. The orchestra presented a magnificent performance and received massive applause from the audience. After the great success, the conductor was astounded by Goshu's dramatic growth and pushed him onto the stage, shouting 'Goshu, it's an encore! Go stand on the stage alone and play your cello!' Goshu steps onto the stage nervously.