When Ludwig van Beethoven composed “Für Elise” in 1810, he may have hoped for its success in theaters or in Austrian music halls. He could never have guessed that “Bagatelle No. 25 in A minor” would one day become ubiquitous on an island more than 4,700 miles away.
And yet, every morning in Sri Lanka, Beethoven’s classic can be heard floating over paddy fields in the...