The verses on pages 23, 160, and 254 are taken from the song Rundinella. Lyrics by Rocco Galdieri and music by Gaetano Spagnolo (1918).
The verses on page 91 are taken from the song E allora? Lyrics and music by Armando Gill (1926).
The verses on page 144 are taken from the song Body and Soul. Lyrics by Edward Heyman, Robert Sour, and Frank Eyton and music by Johnny Green (1930).
The verses on pages 151-155 are taken from the song Caminito. Lyrics by Gabino Coria Peñaloza and music by Juan de Dios Filiberto (1926).
The verses on pages 165, 171, 216, 222, 244, 245, and 258 are taken from the song Scetate. Lyrics by Ferdinando Russo and music by Mario Pasquale Costa (1887).
The verses on page 207 are taken from G. Verdi, Un ballo in maschera, to a libretto by Antonio Somma, from the romanza Re dell’abisso, affrettati, Act I.