It Ain't Necessarily The Saint James Infirmary lyrics

(George Gershwin, Ira Gershwin, Dubose Heyward / Joe Primrose)

[includes It Ain't Necessarily So (Gershwin/Gershwin) and St James Infirmary (Joe Primrose)]

[Guitar solo from Pound For A Brown
Stadio Communale, Pistoia, Italy
July 8, 1982

FZ CUSTOM STRAT
Ray White rhythm guitar
Steve Vai stunt guitar
Tommy Mars keyboards
Bobby Martin keyboards
Ed Mann percussion
Scott Thunes bass
Chad Wackerman drums]

Submitted by Guest

What do you think is the meaning of It Ain't Necessarily The Saint James Infirmary by Frank Zappa?