Intended as a tribute to fellow instrumental genius and spiritual seeker John Coltrane, the album held two Coltrane tunes, two McLaughlin songs and the traditional gospel tune "Let Us Go Into the House of the Lord." Four decades later this material, cut in sessions during October 1972 and March 1973, still stands the test of decades thanks to its interstellar playing.

The album occurred in large part due to the direct inspiration of guru Sri Chinmoy, who both Santana and McLaughlin followed. It also marked a search for musical stability for the two artists. Santana was searching for new directions, with the expanded jams of Santana III now an obvious precursor to 1972's more jazz oriented Caravanserai. At the same time, the original powerhouse membership of McLaughlin's Mahavishnu Orchestra was splintering, even as the group reached the height of its popularity playing defiantly loud, experimental and ambitious music.

To get an earful of how Santana's and McLaughlin's playing styles differed and meshed, listen to Love Devotion Surrender's "A Love Supreme," one of the set's Coltrane compositions. Both are playing electric guitar at a superbly high level, trading phrases, with Santana panned hard left and McLaughlin hard right. At the time, Santana had recently switched from the SG he favored at Woodstock and on his earlier albums to Les Paul Standards and Les Paul Customs. With Mahavishnu, McLaughlin was mostly seen with a black Les Paul Custom or his double-neck EDS-1275 blasting through a 100-watt Marshall head.