When Jazz on a Summer's Day was first seen in American cinemas in March 1960, it showed that seeing popular music live could be a leisure activity akin to watching high-end sports. Indeed, director Bert Stern intercut the musical performances he captured on film with footage of yachts trying-out for 1958’s America’s Cup.

Although John & Beverley Martyn and Mott The Hoople were both signed to Island, the connection went further than being with the same label. When Guy Stevens conceived the band he named Mott The Hoople, the producer saw them as uniting the essence of Bob Dylan with that of The Rolling Stones. On their eponymous first album, issued in 1969, Ian Hunter’s vocals are so like Dylan it edges into the preposterous. That same year John & Beverley Martyn made Stormbringer! in Woodstock.

Think of Cocteau Twins. Their label 4AD will inevitably be high on the list of markers coming to mind. Whatever they were like as people, mysterious, oblique, shadowy and other similar adjectives were conjured for the band – and label alike. Despite interpretations of them as something other, their 1990 album 4AD Heaven or Las Vegas went Top Ten in the UK, entered the American Top 100 and sold quarter of a million copies.

From 7.30pm on Thursday 19 January 1967, George Martin and The Beatles spent the next seven hours at the Abbey Road’s Studio 2 working through takes one to four of “In the Life of…”, a new song which, when completed, would be retitled “A Day in the Life”. In late May, fans would hear it as the final track of Sgt. Pepper's Lonely Hearts Club Band.

One marker arrived on 1 August 1981, when MTV began broadcasting. With its format based around screening pop videos, American radio had a competitor and would lose the edge it once had.

Stanley Kubrick’s use of music in his films has been inspirational. In 1999, The Caretaker – a nom-de-musique of Jim Kirby – issued Selected Memories From the Haunted Ballroom. While his alter-ego openly acknowledged the director’s film The Shining, the album’s music reconfigured vintage recordings of bands in tribute to the film’s haunted ballroom scenes.

Gary Burton fans with an eye for detail will know that “Fly Time Fly (Sigh)” from his second album, 1962’s Who Is Gary Burton?, had a writer credit of “Gibbs”. The American vibes-ace’s next album, 1963’s 3 in Jazz, a collaboration with Sonny Rollins and Clark Terry included another song by Gibbs. Burton’s follow-up solo album, Something's Coming! (1964), featured two Gibbs compositions.

In 2016, a writer from The Washington Post thought they had found Bobbie Gentry. After announcing their presence via the entry phone system of a gated housing development near Greenwood, Mississippi, they were told “there's nobody here by that name.” Though Greenwood was where Gentry had attended school and taught herself to play multiple instruments, it was a predictable response.

During their original 1980 to 1984 lifespan as a recording unit, Soft Cell issued three albums, a mini-album, eleven singles and EP. There were also compilation appearances, bonus tracks on discs included with albums or singles (such as the 12-inch of Jimi Hendrix cover versions accompanying The Art of Falling Apart) and extended tracks which appeared on 12-inch singles. Everything could probably be collected on six CDs.

Until now, hearing the extraordinary “Ratidzo” was all-but impossible. The original single is rare and has not been reissued before. It begins with a plaintive whistle which sets the scene for a hypnotic and beautiful rotating pattern of single notes possibly played on a gamelan-style instrument. Rhythmic accompaniment comes from a form of shaker. It is not instantly possible to place where this music is from. Eastern Asia? Hawaii?