Formal structure of  "I Want You (She's So Heavy)":
Intro (ch) 0:00-0:13
Verse 1a 0:13-0:36
Verse 1b 0:36-0:53
Verse 2a 1:05-1:27
Verse 2b 1:27-1:44
Solo (verse a) 2:25-2:48
Solo (verse b) 2:48-3:06
Verse 3a 3:45-4:07
Verse 3b 4:07-4:24
Comments: Each verse has two subsections, both featuring the same melodies and similar chords, but a fourth higher (the first half is centered around A minor, while the second half is centered around D minor - though it certainly is not a key change).
The transitions that follow each verse are perfectly designed to be tags, however with no defining musical motif, I have to call them transitions.
The song ends with the chorus, the 5-bar phrase that defines the chorus is heard 14 times and on the 15th time it is abruptly cut off. There is no coda. The purpose of the coda, of course, is to conclude the song. In this case, there is no conclusion, it simply stops. Thus, there will no concluding gestures, there can be no coda.
The macro-scale formal layout can be seen as 4 iterations of Verse (both parts a and b) + transition + chorus, with the first such iteration omitting the chorus, all of which is preceded by the introduction.
This blog is a workshop for developing my analyses of The Beatles' music.