The .38 calibre handgun used by Mark David Chapman to kill John Lennon.[Photo/Agencies]

We remember where we were that night those lads from Liverpool leapt a wild octave -- "I wanna hold your hand!" -- before a screaming audience on "The Ed Sullivan Show." And simply changed the world.

Or the days we carefully placed each vinyl gift from the Fab Four on a turntable, from the irresistible "Meet the Beatles" through the adventurous "Rubber Soul," from the psychedelia of "Sgt. Pepper" to the swan song of "Let It Be." Or where we first heard the songs of John Lennon, solo artist: the quiet ferocity of "Working Class Hero," the tough idealism of "Imagine" or the buoyant hope of "Starting Over," and so many more.

And we grieve still for that December night in 1980 when a gunman struck on a street in New York, taking Lennon's life. But not his legacy.

Now a younger generation can say, "There are places we remember," linking moments in their lives with the music Lennon created, whether with the Beatles or as a solo artist. Younger fans have discovered the hits of Lennon & McCartney through the film "Across the Universe," through the Cirque du Soleil show "Love" or through the interactive joy of playing "The Beatles: Rock Band" videogame.

And they've taken to the streets to protest wars from Iraq to Afghanistan, chanting Lennon's still-all-too-relevant demand, "Give Peace a Chance." Seventy years after the birth of John Lennon, Billboard celebrates his legacy by spotlighting events around the world.

REMEMBERING JOHN: BIRTHDAY CELEBRATION EVENTS

Just as the songs of John Lennon won the hearts of fans worldwide during his lifetime, an array of events and projects are marking the 70th anniversary of Lennon's birthday on October 9. Here are just a few.

October 9: Lennon Ono Grant for Peace Awards in Iceland

Ono will be in Iceland to present the biannual Lennon Ono Grant for Peace Award to "Gasland" director Josh Fox, nature/culture writer Michael Pollan, author/human rights activist Alice Walker and human rights/safety activist Barbara Kowalcyk. She'll attend the annual lighting of the Peace Tower and perform with Sean Ono Lennon and the Plastic Ono Band in Reykjavik.

October 9: "Peace and Harmony" Lennon Monument Reveal in Liverpool

Lennon's hometown of Liverpool will host his older son, Julian Lennon, and his first wife, Cynthia Lennon, at the unveiling of an 18-foot-high monument titled Peace and Harmony in the city center. The work was commissioned by Global Peace Initiative, an arts organization based in the United States.

October 9: Screening of PBS Documentary "LENNONYC" in NYC

PBS will screen a new American Masters documentary "LENNONYC," which focuses on Lennon's life in New York during the 1970s, on Lennon's birthday, October 9, in New York's Central Park at 7 p.m. The film, which features unreleased recordings and home movies, will air nationally on PBS on November 22 at 9 p.m. "LENNONYC" premiered at the New York Film Festival on September 25 and was promoted with a new PBS podcast series.

November 2: "Imagine There's No Hunger" Concert in Hollywood

Hard Rock Cafe International will present "Imagine There's No Hunger: Celebrating the Songs of John Lennon," a concert at the Hard Rock Cafe Hollywood to benefit the Grammy Museum and WHY Hunger, which fights hunger and poverty worldwide.

November 12: All-Star Lennon Tribute Concert in NYC

An all-star tribute concert to honor Lennon is planned for November 12 at the Beacon Theater in New York to benefit the Playing for Change Foundation, with a lineup that will include Jackson Browne, Patti Smith, Cyndi Lauper, Aimee Mann, Shelby Lynne, and others.

December 9: "Lennon Remembered" Tribute Concert in Liverpool

Liverpool's Echo Arena will host a tribute concert, "Lennon Remembered," on December 9 to benefit three charities: the Alder Hey "Imagine" Appeal, local radio station Radio City's Cash for Kids promotion and the Mathew Street Festival. The lineup for the concert hasn't yet been announced.

Miscellaneous Projects:

The Montblanc John Lennon Edition Writing Instrument, a series of three luxury pens to honor the artist's creativity and style, was unveiled Sept 12 in New York, Tokyo, Hong Kong, Mexico City and Berlin. Proceeds from sales will benefit cultural and educational groups. At the New York event, filmmaker Sam Taylor-Wood presented "Nowhere Boy," his film about Lennon's early years.

The John Lennon Educational Tour Bus will be present at the Plastic Ono Band concerts and Grammy Museum events in Los Angeles. The bus offers workshops to students on state-of-the-art audio and video equipment. It began as an offshoot of the John Lennon Songwriting Contest. (In August, the tour bus created a scholarship with the SAE Institute in Nashville named for SAE student Dan Brown, who died in Nashville's spring floods.)