Sonny Rollins nails the significance and thrill of Both Sides at Once: The Lost Album, a previously unheard John Coltrane recording captured at Van Gelder Studios at the end of a two-week stint at Birdland in 1963: "[It's] like find a new room in the Great Pyramid," he says in the liner notes. Once you experience Coltrane, McCoy Tyner, Jimmy Garrison, and Elvin Jones in peak form, you're certain to agree. Unknown until 2004 and unheard until now, the music on this album represents one of the most influential groups in music history both performing in a musical style it had perfected. Coltrane personally decided to stash away the material, which was ultimately lost to time until it was discovered by the family of his first wife and brought to the attention of Impulse! It is impossible to overstate the breadth, spirit, musicianship, and sound of these recordings, two of which are originals that were captured on tape here and here alone. The Deluxe Edition of the album also includes seven alternate takes of the tracks from the same session, including four renditions of "Impressions." The first week of March in 1963 was busy for John Coltrane. He was in the midst of a two-week run at Birdland and was gearing up to record the famed John Coltrane and Johnny Hartman album, which he did on March 7. But there was a session the day before that was the stuff of legend, until now. On Wednesday, March 6, Coltrane and the quartet went to Van Gelder Studios in Englewood, NJ and cut a complete album's worth of material, including several original compositions that were never recorded elsewhere. They spent the day committing these to tape, taking time with some, rehearsing them two, three times, playing them in different ways and in different configurations. At the end of the day, Coltrane left Van Gelder Studios with a reference tape and brought it to the home in Queens that he shared with his wife, Naima. These tapes remained untouched for the next 54 years until Impulse! approached the family about finally releasing this lost album. Though the master tape was never found – Rudy Van Gelder wasn't one for clutter – the reference tape was discovered to be in excellent condition. On this album, there are two completely unknown and never-before-heard originals. "Untitled Original 11383" and "Untitled Original 11386," both played on soprano sax. "11383" features an arco bass solo by Jimmy Garrison, a relative rarity, and "11386" marks a significant structural change for the quartet, in that they keep returning to the theme between solos, not typical in the quartet's repertoire. In addition to the two unheard originals, "One Up, One Down" – released previously only on a bootleg recording from Birdland – is heard here as a studio recording for the first and only time. It contains a fascinating exchange between Elvin Jones and Coltrane. "Impressions," one of Coltrane's most famous and oft-recorded compositions, is played here in a piano-less trio. In fact, McCoy Tyner lays out a number of times during this recording session. It's one of the more interesting aspects of this session and reflects the harmonic possibilities that Coltrane was known to be discussing regularly with Ornette Coleman around this time. This studio session also yielded Coltrane's first recording of "Nature Boy," which he would record again in 1965, and the two versions differ greatly. The one we know is exploratory, meandering. This version is tight, solo-less and clocking in at just over three minutes. The other non-original composition on the album is "Vilia," from Franz Lehár's operetta "The Merry Widow". The soprano version on the Deluxe Edition is the only track from this session to have been previously released. This incredible, once-in-a-lifetime discovery reveals a number of creative balances at work, like developing original melodies while rethinking familiar standards. Trying out some tunes first on tenor saxophone, then on soprano. Using older techniques like the arpeggio runs of his "sheets of sound" while experimenting with false fingerings and other newer sounds. This session was pivotal, though to call it such overlooks the fact Coltrane was ever on pivot, always pushing the pedal down while still calling on older, tested ideas and devices.