Sissel Kyrkjebø performing "O sole mio" with the Four Tenors from China at a concert in Mariehamn, Finland in July 2019. Sissel starts singing at 1:36. "O sole mio" is a Neapolitan song written in 1898. Its lyrics were written by Giovanni Capurro and the music was composed by Eduardo di Capua and Alfredo Mazzucchi. The song translates literally as "my sun" or "my sunshine".

Ma n’atu sole cchiù bello, oi ne’,
’o sole mio sta nfronte a te!
’o sole, ’o sole mio
sta nfronte a te, sta nfronte a te!

But another sun, even more beauteous, oh my sweetheart,
My own sun, shines from your face!
This sun, my own sun,
Shines from your face; It shines from your face!