That is correct. Bruce played rhythm on "Walkin'". It's widely known now that Bruce was almost heading for a nervous breakdown at the time (which is why he really did need that holiday and why he was thinking of quitting the Shadows). He was convinced that his guitar was out of tune (even when it probably wasn't). Bruce had spent a considerable amount of time tuning up hs guitar before the session commenced and all went well for a while. When it came to recording "Theme For Young Lovers" - Bruce was convinced that his guitar was out of tune once more and so began the whole laborious process (tuning up) - which could sometimes take him hours - all over again. With time running out, tempers beginning to fray, patience wearing thin and Bruce's nerves shot - he had a blazing row with Hank, left the studio and drove home - leaving Hank, Brian & Brian to finish the session without him. Thus, Hank played rhythm on "T F Y Lovers". This wasn't known for many, many years and, initially, the story was that Bruce had been taken ill. His holiday and the arrival of John Rostill restored his health and stopped him from quitting the Shads. John showed Bruce a new (to him) method of tuning his guitars by using harmonics. Even though it was all probably pyschological - Bruce trusted John's judgement (viz: Bruce's guitar/s was/were in tune) completely. 100%. It took away all his worries on that score. Further - Bruce decided to personally pay John £40 per month to tune his guitars whenever and wherever necessary.
RE: "Argentina". I'm sure Bruce does play some rhythm on there. On the session concerned - extra work was being done to complete the track - but the whole day was over running big - time. Bruce is a keen football fan and he had a match to go to. He informed all concerned that if the session wasn't completed by a certain time (6.00pm? 6.30pm?) then he was going to leave at that point. He did just that - hence the need to draft in another guitarist (possibly just for the introduction). Maybe someone like Stuart Duffy could tell us more about that one?
Best wishes,
Rob
