CNN  — 

Two rare collections of previously unreleased David Bowie songs are to be released later this year, in the form of a streaming-only EP and a physical album that will debut on April 18, 2020 – Record Store Day.

The six-track EP is titled “Is it any wonder?” and the first song, an acoustic version of “The man who sold the world,” is already available on streaming platforms. Its release marks both Bowie’s 73rd birthday, which would have occurred on Tuesday, and the 50th anniversary of the writing and recording of the song itself.

The remaining five songs from the EP will be released by record label Parlophone on a weekly basis starting Jan. 17, 2020.

The same version of “The man who sold the world” will also be included in the other release, a 9-track album titled “CHANGESNOWBOWIE,” to be issued on LP and CD in limited quantities on Record Store Day.

AFP/AFP/AFP/Getty Images
A 3D wall portrait of David Bowie, created by Australian street artist Jimmy C, in Brixton, South London
Potter/Express/Getty Images/File
Bowie's hair and outfits shocked and awed for decades. Pictured, a young Bowie sports a Prince Valiant-esque do in March 1965, while he was still going by his birth name of Davy Jones. He changed his name to Bowie following the success of the Monkees and their lead singer Davy Jones.
Hulton Archive/Getty Images/file
Bowie appears at the Disc and Music Echo Valentine Awards ceremony at the Cafe Royal in London in February 1970.
LEON NEAL/AFP/AFP/Getty Images
Bowie wore this "Starman" costume for his appearance in "Top of the Pops" in 1972. It was featured in the "David Bowie is" exhibition in Victoria and Albert (V&A) Museum in London in 2013. It is one of 300 objects from the exhibit.
Hulton Archive/Archive Photos/Getty Images
Bowie performs as 'Ziggy Stardust' in 1973.
Express/Hulton Archive/Getty Images
Bowie performs his final concert as Ziggy Stardust at the Hammersmith Odeon in London on July 3, 1973. The concert later became known as the Retirement Gig.
Archive Photos/Getty Images/file
Bowie performs onstage in 1973 wearing makeup and a costume that covers only one leg and one arm.
peter wilkinson/cnn
This costume was made for Bowie on the 1973 "Aladdin Sane" tour by Japanese designer Kansai Yamamoto. Bowie said the designs were "everything I wanted... outrageous, provocative and unbelievably hot to wear under the lights."
Evening Standard/Getty Images/File
Bowie appears in concert at Earl's Court, London, during his 1978 world tour.
Express Newspapers/Getty Images/File
Bowie grins broadly, wearing a plaid shirt with his hair slicked back, circa 1980.
Courtesy Tristar Pictures
Bowie appears on the movie poster for the 1986 film "Labyrinth," for which he wrote the music and played the role of the Goblin King.
Dalle/FERRANDIS /Landov/File
Bowie performs sporting a blond mullet in 1987.
JACK GUEZ/AFP/Getty Images/File
Bowie appears onstage at the Parc des Princes in Paris in June 1997.
STAN HONDA/AFP/Getty Images/File
Bowie appears with his wife, model Iman, at the New York premiere of "Hannibal" in February 2001.
MARTIN BUREAU/AFP/Getty Images
Bowie performs at Zenith in Paris in September 2002.
Scott Gries/Getty Images North America/Getty Images
Bowie performs at the 2002 VH1 Vogue Fashion Awards at Radio City Music Hall in New York City.
AFP/AFP/AFP/Getty Images
Bowie performs in Copenhagen in 2003.
Evan Agostini/Getty Images/File
Bowie arrives at the Metropolitan Museum of Art Costume Institute Benefit Gala in April 2003 in New York.
Jo Hale/Getty Images/File
Bowie performs on the third and final day of the 2004 Nokia Isle of Wight Festival at Seaclose Park on the Isle of Wight, England.
Andrew H. Walker/Getty Images for DKMS/File
Bowie looks clean-cut while attending a gala in New York honoring Rihanna and Michael Clinton with his wife, Iman, in April 2011.

Previously available only as a bootleg, the album captures a live session recorded in November 1996 during the rehearsal of Bowie’s then upcoming 50th birthday concert at New York’s Madison Square Garden. It was broadcast once by BBC Radio 1 in the UK in 1997.

During the broadcast, Bowie was interviewed by host Mary Anne Hobbs, who delivered special birthday messages and questions from fellow musicians Bono, Damon Albarn, Scott Walker and Robert Smith.

The songs from the mostly acoustic session are some of Bowie’s favorites and include “Lady Stardust,” “Repetition,” “Aladdin Sane” and a cover of Velvet Underground’s “White Light/White Heat.” During the session, Bowie was accompanied by Gail Ann Dorsey (bass, vocals), Reeves Gabrels (guitars) and Mark Plati (keyboards and programming).

David Bowie died on Jan. 10, 2016 at the age of 69 after an 18-month battle with cancer. Previously released posthumous materials include “No Plan,” an EP published to coincide with what would have been his 70th birthday in 2017, and an unreleased album titled “The Gouster.”