Enrico Caruso – O Sole Mio (1916, Shellac) - Discogs
O sole mio - Wikipedia
Ricardo Bornman Guitar Maestro
Il Volo (album) - Wikipedia
O sole mio Library of Congress
O Sole Mio (TBB ) by Eduardo di Capua / Jaco
O sole mio — The Three Tenors
O sole mio (Di Capua, Eduardo) - IMSLP
Pizza Sandra - Picture of Ristorante Pizzeria S. Martino Quarteira - Tripadvisor
Joop's Musical Flowers: O Sole Mio (1898) / Meine Sonne (1911) / Your Own Dear Kiss (1912) / My Sunshine (1913) / Beneath Thy Window (1923) / There's No Tomorrow (1949) / It's Now Or Never (1960) / Ich Komme Wieder (1960)
O sole mio – Wikipédia
Italian music in Russia