He won the third place with "Quando vien la sera" at the Sanremo Music Festival 1960.
In 1963 Jerry Leiber and Mike Stoller translated the text into English and released this song under the title "I (Who Have Nothing)".
It became one of their greatest hits and was covered more than thirty times, e.g. by Tom Jones, Gladys Knight, Manfred Mann's Earth Band, Ben E. King, Sylvester James, Luther Vandross and Shirley Bassey.
Further songs which had an entry in the Italian charts were "Libellule" (1961), "Lei" (1961), "Cipria di sole" (1962), "Tobia" (1962), "Fermate il mondo (1963) and "Quando ci si vuol bene... (come noi)" (1963).
In the 1960s and the 1970s Sentieri was also seen in some films, e.g. in Howlers in the Dock (1960) with Adriano Celentano and in The Most Beautiful Wife (1970) with Ornella Muti.