During the word "believe" there is a squeak, sounds like from a violin string. (Left channel)
0:50
The words "something wrong ... for yesterday" are double tracked. This could be to do with Paul having replaced a section of the vocal -- George Martin said that the vocal was piped as a guide track for the orchestra. So the original and new vocals combine here to double track accidentally.
1:45
Right channel, just before word "Now I need" there is a clunk
