An upcoming documentary seeks to illuminate an 18-month span of John Lennon and Yoko Ono's life together in Greenwich Village.
"I fell in love with an independent creative genius," Lennon's voice says in the clip. "I started waking up."
The documentary will examine the couple's One to One benefit concert in 1972, Lennon's only full-length concert following his departure from the Beatles.
"Why would you do a concert for free?" someone asks Lennon in the preview.
"To change that apathy that all the youth have," Lennon says. "Speak to them, sing to them and do anything to get them alive again."The film was shot in an apartment designed to look like the one the couple shared in 1971 New York.
Lennon and Ono's son, Sean Ono Lennon, produced the music and served as an executive producer, with Oscar-winning filmmaker Kevin Macdonald as director.
One to One: John & Yoko will open in theaters on April 18, with IMAX showings beginning April 11.