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.