In his autobiography , Donovan relates how Jeff Beck 's guitar had not been delivered to the studio .
They had to borrow one for Donovan to play on the track ( at Jeff Beck 's request , guitar was a Fender , Donovan 's preferred instrument ) .
In his autobiography , Donovan relates how Jeff Beck 's guitar had not been delivered to the studio , so they had to borrow one for him to play on the track ( at Beck 's request , it was a Fender , his preferred instrument ) .