Monty Python's 'Galaxy Song' by Stephen Hawking amid releases from Metallica, Jack White, David Bowie and Bob Dylan

Vinyl copies of a cover of Monty Python's 'Galaxy Song' recorded by Stephen Hawking go on sale later as part of Record Store Day.

A music video has also been been created by the Pythons for it - featuring Hawking when he joined them on tour to perform it.

Copies of the record will be on sale in independent record stores taking part in Record Store Day

Record Store Day, international celebration of independent record stores with in-store performances and exclusive CD/vinyl releases.

This year's Ambassador is Foo Fighters frontman Dave Grohl.

Metallica release their 1982 demo tape 'No Life 'Til Leather' as a limited-edition cassette, marking the first time the demos have been officially released.

Jack White re-releases Elvis Presley's first-ever record via his Third Man Records label after purchasing the sole original copy of 'My Happiness / That's When Your Heartaches Begin' at auction for.

Other limited edition highlights included releases from David Bowie, Bob Dylan, Johnny Marr, Manic Street Preachers, Chvrches, Pulp, The 1975, Biffy Clyro, William Onyebor, Ryan Adams, Daughter, Warpaint and Suede.