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Miles in the Sky is a studio album by American trumpeter and composer Miles Davis, released on July 22, 1968, by Columbia Records.

Miles in the Sky was produced by Teo Macero and recorded at Columbia Studio B in New York City on January 16, 1968, and May 15–17, 1968. For the album, Davis played with tenor saxophonist Wayne Shorter, pianist Herbie Hancock, drummer Tony Williams, and bassist Ron Carter. Guitarist George Benson made a guest appearance on the song “Paraphernalia”. The album’s title was a nod to the Beatles’ 1967 song “Lucy in the Sky with Diamonds” (https://en.wikipedia.org/wiki/Miles_in_the_Sky).

AllMusic Review by Stephen Thomas Erlewine:
With the 1968 album Miles in the Sky, Miles Davis explicitly pushed his second great quintet away from conventional jazz, pushing them toward the jazz-rock hybrid that would later become known as fusion. Here, the music is still in its formative stages, and it’s a little more earth-bound than you might expect, especially following on the heels of the shape-shifting, elusive Nefertiti. On Miles in the Sky, much of the rhythms are straightforward, picking up on the direct 4/4 beats of rock, and these are illuminated by Herbie Hancock’s electric piano — one of the very first sounds on the record, as a matter of fact — and the guest appearance of guitarist George Benson on “Paraphernalia.” All of these additions are tangible and identifiable, and they do result in intriguing music, but the form of the music itself is surprisingly direct, playing as extended grooves. This meanders considerable more than Nefertiti, even if it is significantly less elliptical in its form, because it’s primarily four long jams. Intriguing, successful jams in many respects, but even with the notable additions of electric instruments, and with the deliberately noisy “Country Son,” this is less visionary than its predecessor and feels like a transitional album — and, like many transitional albums, it’s intriguing and frustrating in equal measures (https://www.allmusic.com/album/miles-in-the-sky-mw0000652711).

Track listing:
Side one
1. “Stuff” (Miles Davis)  17:00
2. “Paraphernalia” (Wayne Shorter)  12:38
Side two
1. “Black Comedy” (Tony Williams)  7:26
2. “Country Son” (Miles Davis)  13:52

Personnel:
Miles Davis – trumpet, cornet on “Stuff” and “Country Son”
Wayne Shorter – tenor saxophone
Herbie Hancock – piano, electric piano on “Stuff”
Ron Carter – bass, electric bass on “Stuff”
Tony Williams – drums
George Benson – electric guitar on “Paraphernalia”

Released: July 22, 1968
Recorded: January 16 and May 15–17, 1968
Studio: Columbia Studio B in New York City
Length 50:56
Label Columbia
Producer Teo Macero