Dreamers"). Meanwhile, Biff and his gang learn of Marty's attendance at the upcoming dance and plot to defeat him ("Teach Him a Lesson"). On the night of the dance, Doc thanks Marty for giving him hope for his future but Marty secretly writes a letter to warn him of his death in 1985, despite being warned of the harm from disclosing future events. Marty also reflects on his only chance to make it back, but dreams of Jennifer back in 1985 for comfort ("Only a Matter of Time (Reprise)"). During the school dance, Lorraine advances on Marty before Biff locks him in a nearby dumpster and harasses Lorraine. Biff overpowers an arriving George, but George knocks him unconscious in one punch. As George escorts a grateful Lorraine to the dance, singer Marvin Berry and his band, on a smoke break, free Marty from the dumpster but Marvin's fingers are accidentally clamped by the closing lid. Knowing music will be needed for George and Lorraine to kiss, Marty volunteers to play guitar instead. The band plays "Earth Angel" as George and Lorraine kiss, saving Marty's existence. On Marvin's request for another song, Marty performs "Johnny B. Goode", but his guitar solo grows out of hand. Marty leaves the dance to meet Doc who explains that high winds disconnected the upper cables and that he would have to reconnect them despite his fear of heights. Marty gives his letter to Doc who destroys it, worried about the consequences. Doc braves his fear and the storm to connect the wires ("For the Dreamers (reprise)") while Marty drives the DeLorean, inserts the electric hook and accelerates to 88 miles per hour as the lightning strikes and sends him back to 1985. However, upon arrival, the car fails before Marty can keep driving to the hospital to save Doc. As Marty grieves over failing to save Doc, Doc appears, revealing that he pieced the letter back together and wore a better protective suit. The following morning, Marty discovers his father is now a renowned science fiction author with an annual celebration named after him, his family is more professionally and socially successful and a servile Biff is under George's employ. At the celebration, the McFlys present the town with a check to restore the clock tower. As Marty and his band perform "The Power of Love" and the whole town joins in, Doc suddenly returns