Kramer's film soundtrack credits include Blue Wild Angel: Live at the Isle of Wight, Festival Express, Jimi Plays Monterey, Jimi Plays Berkeley, Live at the Fillmore East, Mad Dogs and Englishmen, The Pursuit of Happiness, Rainbow Bridge, The Song Remains the Same, and Woodstock: Music from the Original Soundtrack and More.

Kramer was interviewed extensively in Jimi Hendrix: Hear My Train a Comin', a two-hour American Masters documentary which debuted in November 2013.

He also assisted on Pye Studios recordings by the Kinks, the Searchers, the Undertakers, Petula Clark, and Sammy Davis Jr.

In 1964 he founded KPS Studios, a mono- and two-track facility which was acquired in 1965 by Regent Sound, where the Rolling Stones had recorded their first album.

Kramer engineered two Beatles hit singles which appeared on Magical Mystery Tour—"All You Need Is Love" and "Baby You're a Rich Man".

The two songs were recorded at Olympic Studios, where, in 1967, Kramer engineered albums for the Rolling Stones, Small Faces, Traffic, and Jimi Hendrix.

Kramer produced Buddy Guy, classical guitarist John Williams, award-winning country group the Kentucky Headhunters, hard rock and metal bands such as Whitesnake, Icon, Pretty Maids, Fastway, Alcatrazz featuring Steve Vai and Graham Bonnet, and Anthrax.

In 1993 Kramer produced and engineered Stone Free: A Tribute to Jimi Hendrix, featuring tracks by Jeff Beck, Eric Clapton, The Cure, Buddy Guy, classical violinist Nigel Kennedy, Living Colour, jazz guitarist Pat Metheny, hip hop artists P.M.

At the time of his death, Jimi Hendrix had a considerable backlog of material recorded in anticipation of future album releases.

Its diverse artists' roster included the London Metropolitan Orchestra, Toots Thielemans, Carlos Santana, Robben Ford, Taj Mahal, Sting, Steve Vai, Buddy Miles, Brian May, and Bootsy Collins.

He won a 1999 Grammy award for his audio production on the video for Jimi Hendrix's live album Band of Gypsys.

Kramer collected another Grammy in 2002 for engineering a single entitled "The Game of Love", with Carlos Santana and vocal by Michelle Branch.

In 2004, Kramer had several Hendrix-related projects, including helping DigiTech design and create an effects pedal which emulates characteristically Hendrixian guitar sounds.

Kramer specifically credited modern monitors, which provide abundant high-end detail, making it clear where various instruments are within the stereo image.

In the same year, Kramer remastered the Woodstock video footage of Jimi Hendrix for DVD release, revealing a fuller perspective of the guitarist's performance.

Also that year, galleries in Santa Monica, California, Hollywood, and Rotterdam exhibited Kramer's photographs of rock stars performing, recording, and in candid moments.

In 2008 Kramer mixed tracks for the Jimi Hendrix avatar (a character that a game player can use as an alter ego) Activision's Guitar Hero.

In that same year he remixed the posthumously-released Band of Gypsys Live at the Fillmore East, along with albums by Jimi Hendrix, Janis Joplin, Santana, and Crosby, Stills and Nash.

The project includes contributions from Brandi Carlile, Pearl Jam's Mike McCready, Jason Mraz, Grace Potter and the Nocturnals, Billy Gibbons, Rafael Saadiq, Heart, and Crosby and Nash.

The backing musicians include Buddy Miles and Billy Cox, later to become Hendrix's Band of Gypsies, and Stephen Stills on bass.

Kramer specifically cites Hendrix's strong individuality, powerful message, and expansion of the sonic vocabulary of electric guitar, including its potentials for controlled feedback and distortion.

To some extent this was a result of working with results-oriented manager and early producer Chas Chandler, who brought Hendrix to England in September 1966, where he established his fame before returning to the United States.

In June 1973, a group of struggling rock musicians whose previous band, Wicked Lester, had flamed out, cut a five-song demo as Kiss with Kramer at Electric Lady Studios.

It subsequently reached gold status, then platinum, and multi-platinum, and generated the group's first hit single, "Rock and Roll All Nite".

This not only buoyed the group, it probably staved off a bankruptcy filing by their struggling label, and Kramer produced five more albums for the band that went platinum.

According to Kramer, Miller did much to position the Rolling Stones for the longevity which they have since enjoyed: "He went to the heart and soul of where they came from; he was so adept at evoking the psyche of the band, and so clever at production.