
Pictured: Original sheet music (public domain) · source
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Public domain is not one blanket badge — each source can carry its own caveat
Documented covers, adaptations, and cultural echoes — each with a real, dated source
John F. Fitzgerald — Boston mayor and JFK's maternal grandfather — adopted it as his personal theme song from 1909, performing it for four decades.
A barbershop quartet reportedly performed it between innings at Fenway in its early years — likely the predecessor to "Sweet Caroline" as the Red Sox anthem. (Community source, not independently verified.)
In Chaplin's 'Pay Day' (1922), a 1926 Fleischer sound cartoon, the Marx Brothers' 'Monkey Business' (1931), 'I Love Lucy' (1952), 'The Andy Griffith Show,' 'Victor/Victoria,' and DuckTales.
Elliott Smith titled the opening track of his 1998 album XO 'Sweet Adeline'; Alt-J's 'Adeline' (2017) reimagines it as a love ballad from a shark's point of view.