L'immensità

It represents a signature song for both Backy and Dorelli, entering for several weeks in the Italian charts.

"Soltanto Il Sottoscritto" is a Rhythm And Blues song, written by the same Johnny Dorelli.

[3] Released as a single, the song failed to perform well, spending two weeks on the Italian chart and taking the fourteenth place.

[4] The B-side was "Canta ragazzina", another song from 1967 Sanremo Music Festival, performed in the original by Bobby Solo and Connie Francis, which did not even make it to the final.

Mina recorded both songs in Spanish as "La inmensidad" and "Canta muchachita" (the author of the adapted lyrics is unknown).