Rare recording footage
The Hey Bulldog sessions occurred during recording of the promotional video for Lady Madonna. A film crew photographed The Beatles during the recording of the song; it was one of the few times they allowed themselves to be filmed while recording at EMI's Abbey Road studios, and the footage was to be used for a promotional film to be released during their scheduled four-month retreat to India (later edited together as a promotional film for the single Lady Madonna / The Inner Light).
"Paul's bass line was probably the most inventive of any he'd done since Pepper, and it was really well played. Harrison's solo was sparkling, too - one of the few times that he nailed it right away. His amp was turned up really loud, and he used one of his new fuzz boxes, which made his guitar absolutely scream." - Geoff Emerick
"I remember (it) as being one of John's songs and I helped him finish it off in the studio, but it's mainly his vibe. There's a little rap at the end between John and I, we went into a crazy little thing at the end. We always tried to make every song different because we figured, 'Why write something like the last one? We've done that.' We were on a ladder so there was never any sense of stepping down a rung, or even staying on the same rung, it was better to move one rung ahead." - Paul McCartney