Award-winning actor Alec Baldwin will narrate the Boston Symphony Orchestra’s performance of Aaron Copland’s Lincoln Portrait, in the Koussevitzky Music Shed. The award-winning actor and classical music enthusiast joins a special Independence Day weekend program that features two other Lincoln-inspired works. The centerpiece is the world premiere of Philip Glass’ Symphony No. 15, Lincoln, inspired by the 1838 Lyceum Address affirming the role of a democratic American government and warning against internal threats that seek to undermine the rule of law. John Williams’ Suite from Lincoln, from the 2012 film directed by Steven Spielberg, completes the program. Karen Kamensek, regarded as one of the foremost interpreters of Glass, conducts the program in her Tanglewood debut. Grammy-winning baritone Zachary James makes his Tanglewood debut in the Glass symphony.