O, soave fanciulla
"O, soave fanciulla" was an aria from the Earth opera La bohème by Giacomo Puccini from the 19th century.

In 2373, The Doctor performed the duet with a holographic re-creation of Giuseppina Pentangeli. However, the hologram of Pentangeli also duplicated her vanity and demanding temperament. The Doctor considered singing with Maria Callas next time instead.

Due to his extensive use on the , The Doctor suffered a level 4 memory fragmentation. The Jupiter Station Diagnostic Program Alpha-11, examining The Doctor, complained to Kes of the "useless information" which filled The Doctor's program, and as an example, called up a snippet of this song from The Doctor's personality subroutine. As the program continued to degrade, Kes proposed saving the program by "grafting" the diagnostic program's matrix onto The Doctor's, though it was unclear if The Doctor would regain his memories. The procedure was successful and although The Doctor seemed to have some memory loss at first, he first hummed and sung a portion of "O, soave fanciulla" after giving instructions to Kes when B'Elanna Torres told him that she had a headache. ()

Earth musical compositions