Over 14 minutes of the 2/13/70 version of "Dark Star" was included on the Grateful Dead / John Oswald plunderphonics collaboration project Grayfolded. The section of music used was the jam in between the first and second verse, affectionately called the "Feelin' Groovy Jam" by Deadheads, because of the musical similarity to Simon & Garfunkel's "The 59th Street Bridge Song (Feelin' Groovy)". The section of Grayfolded where this can be found is on Disc 2, track 2 called "79th Star Bridge Sonata".
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