"Les Etrangers" (French for "Strangers") is a cover of "Merci bon Dieu", written by Frantz Casseus and first released by Harry Belafonte on his 1957 album An Evening with Belafonte. An instrumental version of the song, "Des Etrangers", is included as a secret recording in track 10, following the final song and a one-minute silence. Only on vinyl editions of the album are the two recordings billed separately.[6] "Les Etrangers" was released as the lead single accompanied by a music video filmed in a mine located in Cagliari, Sardinia. The song was performed at the Festivalbar with "Strada per un'altra città" (Italian for "Road to Another City") which in turn served as the second single, followed by "Emma Bovary" later in 1998. A remix of "Angelus" was released as the fourth and final single.
Notti, guai e libertà met with positive critical reception and is regarded one of Patty Pravo's best works. It also was a commercial success and entered the Italian charts at no. 5. The album sold 150,000 copies as of late 1998.[7][8]