Pink Floyd Ltd./Sony Music EntertainmentBy MATT FRIEDLANDER, ABC News

Pink Floyd has launched a new archival playlist that's available for streaming at YouTube and Spotify. New songs will be added on a daily basis, and each Friday, rare tracks from the band's expansive Immersion box sets that were previously unavailable for streaming will make their debuts.

The playlist, dubbed "Syd, Roger, Richard, Nick and David: An Evolving Pink Floyd Playlist," debuted today with just one song -- a 1974 rendition of "Us and Them" played live at The Empire Pool in London.  It appears on the 2011 Immersion box set version of The Dark Side of the Moon.

The list will gradually evolve to include classic Pink Floyd songs, as well as deep cuts.

Coinciding with each rare track's debut on the playlist, the songs also will be made available for purchase digitally or via streaming from a variety of digital outlets.

Here are the currently unavailable rarities that are scheduled to be added to the list in the coming weeks:

5/29 -- "Have a Cigar" (Alternate Version), from Wish You Were Here's Immersion box set

6/5 -- "Any Colour You Like" (Live at Wembley 1974), from The Dark Side of the Moon's Immersion box set

6/12 -- "Run Like Hell" (The Wall WIP pt. 2 Band Demo), from The Wall's Immersion box set

6/19 -– "Money" (Early Mix 1972), from The Dark Side of the Moon's Immersion box set

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