“There should be some kind of spirit there which is outside whoever is in the band. The spirit of the band, wanting still to play songs, real songs, wanting to play complicated music to a certain extent. Fairly dense arrangements, also difficult pieces of music, not to be difficult but just because that’s a challenge. To do all that and then also play with a degree of anarchy, chaos, and fire and spirit. That’s the spirit of Van der Graaf.”

Looking for answers to what qualifies an album for a makeover and its attendant return to record shop racks can cause heads to spin. Multiple variables are at play but, still, it merits pondering. Market factors come into consideration, including the prices fetched by original pressings, even if the album isn’t obscure.

“Reaffirmation” is the sound of a San Francisco ballroom in 1968. The 12-minute long track opens mysteriously with what might be a Mellotron on the flute setting. A bubbling bass guitar arrives, along with jazzy piano. At 02.50, the tempo picks up and the guitar, which until then has delicately picked its way through the arrangement, begins to soar. There’s a vaguely funky section and, just over half-way in, a dive into an almost free-form spiralling section. This is top-notch psychedelia.

In October 1964, New York’s Goldie & the Gingerbreads boarded the RMS Mauretania for Southampton. In the midst of the British Invasion, they were taking on the beat boom at its coal face. The Beatles, Animals, Dave Clark Five, Rolling Stones and more were cleaning up in their home country but – counter intuitively – Genya Zelkowitz aka Genya Ravan aka Goldie and co went in the opposite direction.

“She is a 20-year-old white New Yorker who sings like a 55-year-old black lady from Mississippi. The experts say she will do for soul pop what Dylan did for folk.” Lillian Roxon’s verdict on Laura Nyro appeared in her ground-breaking 1969 book Rock Encyclopedia, issued before Nyro’s third album New York Tendaberry.

When I Hit You - You’ll Feel It opens with “When I Was Walt Whitman”. A French-language answer-phone message is abruptly cut off by a massive-sounding percussive pulse over which a borderline menacing voice enigmatically murmurs words which are hard to make out. There’re snatches about “repeating tiny fragments” and “when I was Walt Whitman you should have seem me…the words wrote themselves.”

Despite their implosion three years earlier, 1977 was a good year for The Stooges. The CBS budget label Embassy reissued their 1973 Raw Power album in the wake of their songs cropping up in the repertoires of The Damned and Sex Pistols.

After a band’s back catalogue has been reissued countless times, any new release needs a fresh approach to attract attention. Archives and collections can be scoured to find previously unissued tracks. There might be otherwise unknown recordings released under aliases, or maybe something which escaped via an obscure continental soundtrack album. But on their own, such discoveries aren’t enough. They need to be married-up with the familiar. Hence what can be a last-resort release: a complete works collection.

“Saunders' Ferry Lane” elegantly paints a picture of revisiting an empty, out-of-season neighbourhood to reflect on an old relationship. It’s cloudy and begins raining. The grass where the couple lay is dead. Birds have flown away. The gentle arms which held the narrator are gone. “I find no present comfort for my pain” sings a forlorn Sammi Smith. Swelling strings darken the mood, as does a plaintive pedal steel.

Anyone in San Francisco on 15 and 16 June 1968 would have had a tough choice if they wanted to see live music. On Saturday the 15th, Big Brother & the Holding Company and The Crazy World of Arthur Brown were playing The Fillmore. That night, The Charlatans were on at The Straight Theatre. The Sunday saw Big Brother billed with The Steve Miller Blues Band, Dan Hicks (without The Charlatans), Sandy Bull and Santana at The Fillmore. On both dates, Booker T & the MG's headlined The Carousel Ballroom.