"It was very hard for me to work on this, because there were many footages that reminded me of my life with John," Ono told the audience at a preview screening Tuesday of "Lennon Legend."
"Lennon Legend" features 20 of Lennon's songs, illustrated with a mix of restored promo clips, new animation and previously unseen footage of the couple.
"Sometimes it made me feel less professional about it, and I wondered if I could go through it," Ono said.
As executive producer of the disc, she helped comb through videotapes, home movies and newsreels for footage of the couple in performance, at home in New York City and at the beach.
Lennon was shot to death outside his New York City apartment building on Dec. 8, 1980. He and Ono were married in 1969.
"Lennon Legend," a companion to a 1998 album of the same name, will be released Oct. 27 in Britain on Parlophone and Nov. 18 in the United States on Capitol.
LOS ANGELES -- Former "Law & Order" actress Angie Harmon and her pro football player husband, Jason Sehorn, are the parents of a baby girl.
Finley Faith Sehorn was born at 10:55 a.m. Tuesday at a Dallas hospital, publicist Troy Mankin said. No other details were released.
Sehorn, a free safety for the St. Louis Rams, was at Monday night's 36-0 win over the Atlanta Falcons, then flew to be at his wife's side for the birth. Mother and child were doing fine, Mankin said.
Harmon, 31, and Sehorn, 32, married in Dallas on June 9, 2001, a little more than a year after he proposed to her on "The Tonight Show With Jay Leno."
Sehorn is sidelined indefinitely while recovering from a broken left foot sustained in the opening week of training camp.