While John Coltrane first gained attention for his revolutionary ‘sheets of sound’ technique, it was the deep spirituality of his music that really made his recordings as a bandleader such classics. The albums this giant of music recorded for Atlantic in 1959 and 1960 really represent the heart of his legacy. John Coltrane’s life will be the subject of a new documentary (tentative title: Chasin’ Trane), out later this year, and now, for the first time since their original release, this box set gathers his mono recordings from the Atlantic vaults.