Trey Anastasio returned to the stage last night with the Nashville Symphony as he dipped into the orchestral world of Phish. Along with more fit-for-orchestra material like “Petrichor” and “You Enjoy Myself,” Anastasio also dug a little deeper for thoughtful takes on “What’s the Use?” and Phish’s epic “The Lizards” with the help of the massive orchestra. Watch highlights of those tunes…