The well-regarded Portland Symphony, headed by Eckart Preu, offers a variety of performances throughout the season (typically September to May), ranging from pops concerts to Mozart; half the orchestra are Mainers, the rest New Englanders, and all are talented. Summer travelers should consider a Portland detour the week of July 4th, when the “Patriotic Pops” is held (weather permitting) at the city’s Eastern Prom. There are also special Christmas shows.