[1][2] Early bass players were Jet Harris and Dave Ambrose, with Clem Cattini and Viv Prince trying out on drums.

The lineup went through months of personnel changes, notably no fewer than four drummers, before settling on Aynsley Dunbar and switching Wood to bass.

The lineup for that session included guitarist Jimmy Page on rhythm guitar, John Paul Jones on bass, Keith Moon on drums, and Nicky Hopkins on piano.

[3] Frustrated that the band were not playing a strict enough blues set for his taste, drummer Dunbar left and was replaced by Roy Cook for one show, before Stewart recommended Micky Waller, a bandmate of his from Steampacket.

[4] Peter Grant, a road manager at the time, had been to the U.S. with the New Vaudeville Band, and was aware of the new concert and album-oriented rock FM radio format developing there.

The reviews from The Boston Tea Party were as good or better: "By the time he got to his last number ... (the fans) were in a state of pandemonium the likes of which hadn't been witnessed since the Beatles hit town."

By the time they wrapped up the tour at San Francisco's Fillmore West, Peter Grant had secured them a new album contract with Epic Records.

Mickie Most was busy with other projects at the time and delegated most of the work to Ken Scott, who basically recorded the band playing their live set in the studio.

The extra lineup for these sessions included John Paul Jones on Hammond organ, drummer Keith Moon and Nicky Hopkins on piano.

The success of Truth ignited new interest from Most and they recorded the album Beck-Ola at De Lane Lea Studios, engineered by Martin Birch.

[7] To illustrate, Rod Stewart's plans to leave the band may have been under consideration by this time; in July 1969, he brought current bandmate Wood and former bandmate Waller into the studio to record his debut full-length solo album, An Old Raincoat Won't Ever Let You Down, for Mercury Records.The Jeff Beck Group finished the tour and returned to England, only to return to the States in July 1969 for their fifth and final time.

After hearing Bobby Tench perform with his band Gass, "Upstairs" at Ronnie Scott's club in Soho, London,[10] Beck employed him as vocalist and second guitarist.

Tench was given only a few weeks to learn the new lyrics and add his vocals to the album Rough and Ready, before mixing resumed on tracks previously recorded in London by Beck and the other band members.