On This Day in Beatles History: Recording Revolution and Ob-La-Di, Ob-La-Da at Abbey Road – 11 July 1968

Q: What is a reduction mix?

A reduction mix was a technique used with four-track recording equipment to combine existing tracks onto a single track, freeing up space for further overdubs.

Q: Why did The Beatles keep returning to Ob-La-Di, Ob-La-Da?

Paul McCartney revisited Ob-La-Di, Ob-La-Da repeatedly to refine the arrangement, bass parts, and vocals across multiple sessions.

Q: What happened to the bass part McCartney recorded on 11 July 1968?

McCartney's bass part for Revolution was re-recorded the next day. The Ob-La-Di mono mixes were superseded when he re-recorded his lead vocals on 15 July 1968.

Q: When was the White Album released?

The Beatles (the White Album) was released on 22 November 1968, a double album containing 30 tracks.

July 11, 2026

On This Day in Beatles History: Recording Revolution and Ob-La-Di, Ob-La-Da at Abbey Road – 11 July 1968

On 11 July 1968, The Beatles held two recording sessions at Studio Three, EMI Studios, Abbey Road. The sessions — produced by George Martin and engineered by Geoff Emerick — focused on overdubs and reduction mixes for two tracks destined for the White Album: 'Revolution' and 'Ob-La-Di, Ob-La-Da'. Work continued through the night, with the session ending at 3.45am.

Session Details

Date: 11 July 1968
Studio: Studio Three, EMI Studios, Abbey Road, London
Producer: George Martin
Engineer: Geoff Emerick
Tracks worked on: 'Revolution', 'Ob-La-Di, Ob-La-Da'
Session end: 3.45am

The First Session: Nicky Hopkins on 'Revolution' (4–7pm)

The first session ran from 4pm to 7pm and was devoted entirely to overdubs on 'Revolution'. Session pianist Nicky Hopkins — one of the most sought-after session musicians in Britain, known for his work with the Rolling Stones, the Who, and the Kinks — added electric piano to track four on the tape. Hopkins played a solo passage and returned on the electric piano in the coda, adding a distinctive texture to what was already one of the most politically charged recordings in The Beatles' catalogue.

Hopkins' contribution to 'Revolution' is one of the more celebrated session performances on a Beatles recording. His electric piano work gave the track a raw, slightly abrasive quality that complemented John Lennon's distorted guitar and the song's confrontational lyrical stance.

Saxophones Added to 'Ob-La-Di, Ob-La-Da'

The second session began in the evening. Three saxophones were overdubbed onto 'Ob-La-Di, Ob-La-Da', though the names of the session performers who played them were not documented in the studio logs. The saxophone parts added a ska-inflected brass colour to Paul McCartney's Caribbean-influenced composition, reinforcing the song's upbeat, almost music-hall character.

Back to 'Revolution': Reduction Mix Take 16

After the saxophone overdubs, The Beatles returned to 'Revolution'. A third reduction mix — designated take 16 — was created, combining tracks three and four onto the third track of a new tape. This was a standard technique of the era: with four-track recording equipment, reduction mixes (also called bouncing or submixing) were used to free up tracks for further overdubs by combining existing material onto a single track.

Paul McCartney then recorded a bass guitar part for 'Revolution', though this was re-recorded the following day, 12 July 1968, and the 11 July bass track was not used in the final version.

'Ob-La-Di, Ob-La-Da': Reduction Mix Take 23 and Bass Overdubs

The Beatles then returned once more to 'Ob-La-Di, Ob-La-Da' — a move that, according to studio accounts, risked the patience of the engineers and tape operator given the late hour and the number of times the track had already been revisited. Another reduction mix was created, numbered take 23.

McCartney then double-tracked his bass guitar line on 'Ob-La-Di, Ob-La-Da'. The original bass part had become buried in the accumulated layers of previous mixes, and the double-tracked overdub was intended to restore its presence in the track.

Mono Mixes and What Came Next

The session ended at 3.45am after two mono mixes of 'Ob-La-Di, Ob-La-Da' had been created. These mixes were improved upon the following day, 12 July 1968. However, they were ultimately rendered unnecessary when Paul McCartney re-recorded his lead vocals on 15 July 1968, requiring the mixing process to begin again from that point.

The 11 July sessions were therefore a significant but intermediate step in the long and complicated recording history of both tracks. 'Revolution' would eventually appear in two distinct versions: the slow, bluesy 'Revolution 1' on the White Album, and the faster, harder 'Revolution' released as the B-side of 'Hey Jude' in August 1968. 'Ob-La-Di, Ob-La-Da' appeared on the White Album, released in November 1968.

The White Album Sessions in Context

The summer of 1968 was one of the most productive and turbulent periods in The Beatles' recording history. The sessions for what would become The Beatles — universally known as the White Album — began in late May 1968 and continued through October. The double album, released on 22 November 1968, contained 30 tracks and represented the broadest stylistic range of any Beatles record.

The sessions were also marked by significant personal and creative tensions within the group. John Lennon's relationship with Yoko Ono, who was present in the studio, was a source of friction. Ringo Starr temporarily quit the band in August 1968. George Harrison's growing confidence as a songwriter was increasingly at odds with the limited space afforded to his compositions. And Paul McCartney's perfectionism — evident in the repeated revisiting of 'Ob-La-Di, Ob-La-Da' across multiple sessions — was a source of frustration for some of the others.

The 11 July sessions, with their late-night reduction mixes and repeated returns to the same tracks, were characteristic of the White Album recording process: intensive, iterative, and often extending well into the early hours of the morning.

Abbey Road Studios, 3 Abbey Road, St John's Wood, London — where The Beatles worked through the night on 11 July 1968, recording overdubs for 'Revolution' and 'Ob-La-Di, Ob-La-Da'.

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Frequently Asked Questions

What did The Beatles record on 11 July 1968?

The Beatles held two sessions at Abbey Road's Studio Three on 11 July 1968, working on overdubs and reduction mixes for 'Revolution' and 'Ob-La-Di, Ob-La-Da'.

Who was Nicky Hopkins?

Nicky Hopkins was one of Britain's most celebrated session pianists, known for his work with the Rolling Stones, the Who, the Kinks, and many others. On 11 July 1968 he added electric piano to 'Revolution', playing a solo and contributing to the coda.

What is a reduction mix?

A reduction mix (also called bouncing or submixing) was a technique used with four-track recording equipment to combine existing tracks onto a single track, freeing up space for further overdubs. The Beatles used this method extensively during the White Album sessions.

Why did The Beatles keep returning to 'Ob-La-Di, Ob-La-Da'?

Paul McCartney revisited 'Ob-La-Di, Ob-La-Da' repeatedly across multiple sessions to refine the arrangement, bass parts, and vocals. The track went through numerous takes and reduction mixes before reaching its final form on the White Album.

What happened to the bass part McCartney recorded on 11 July 1968?

McCartney's bass guitar part for 'Revolution', recorded on 11 July, was re-recorded the following day and the 11 July version was not used. The mono mixes of 'Ob-La-Di, Ob-La-Da' created that night were also superseded when McCartney re-recorded his lead vocals on 15 July 1968.

When was the White Album released?

The Beatles (the White Album) was released on 22 November 1968. It was a double album containing 30 tracks, recorded across sessions from May to October 1968.