Italian singer-songwriter Biagio Antonacci has changed labels. The artist and his Iris label have signed a contract with Sony BMG.

Antonacci, 44, made his recording debut in 1989 and had spent his entire career to date with Universal Music Italy (previously Polygram Italy).

In separate news, a survey by language institute Dante Alighieri reveals that Adriano Celentano's 1968 hit "Azzurro" is the most popular Italian song outside Italy.

The survey, which was conducted through the institute's Web site, placed Azzurro ahead of Domenico Modugno's 1958 classic "Volare" -- a winner in the first-ever edition of the Grammy Awards -- which came second. Eros Ramazzotti's "Musica è" was third, followed by "'O Solo Mio."

Penned by Giovanni Capurro in 1898, "O Sole Mio" was covered by Elvis Presley in his 1960 hit, "It's Now or Never."