Question: What is the name of a backing vocalist on "It Hurts to Be in Love" , by Gene Pitney, an American singer-songwriter, musician, and sound engineer?

Context articles: It Hurts to Be in Love
Gene Pitney's Big Sixteen
Gene Pitney Sings Just for You
Toni Wine
The Many Sides of Gene Pitney
Gene Pitney's Big Sixteen, Volume Two
Gene Pitney
Gene Pitney Sings World Wide Winners
Gene Italiano
Only Love Can Break a Heart

"It Hurts to Be in Love" is a song written by Howard Greenfield and Helen Miller which was a Top Ten hit in 1964 for Gene Pitney.
 The song was one in a long line of successful "Brill Building Sound" hits created by composers and arrangers working in New York City's Brill Building at 1619 Broadway.
 Although not characteristic of Pitney's pop sound, as heard in "Town Without Pity" and "(The Man Who Shot) Liberty Valance," Allmusic noted that "It Hurts to Be in Love" "was about as close as any of his major hits came to straight-ahead rock & roll."
Gene Pitney's Big Sixteen is American singer Gene Pitney's seventh album, released on the Musicor label in 1964.
 The album contains a mix of hit singles and album cuts from Pitney's early records.
Gene Pitney Sings Just for You is American singer Gene Pitney's third album, released on the Musicor label in 1963.
 It included the single "Mecca" which reached #12 on the U.S. Hot 100 and was a top 10 hit in Australia and Canada.
Toni Wine (born June 4, 1947 in Washington Heights, New York City, United States) is an American pop music songwriter, who wrote songs for such artists as The Mindbenders ("A Groovy Kind of Love"), Tony Orlando and Dawn ("Candida"), Elvis Presley, and Checkmates, Ltd. ("Black Pearl") in the late 1960s and 1970s.
 Wine also sang the female vocals for the cartoon music group The Archies, most notably on their #1 hit song "Sugar, Sugar" (singing the line, "I'm gonna make your life so sweet").
 However, she did not sing the lead vocal in the song "Jingle Jangle", but her voice is quite prevalent in the chorus; the lead was sung by Ron Dante using his falsetto voice.
 In addition, Wine was a backing vocalist on Gene Pitney's "It Hurts to Be in Love" and on Willie Nelson's "Always on My Mind."
The Many Sides of Gene Pitney is the debut album of Gene Pitney, released on the Musicor label in 1962.
 It was mostly a collection of previously released singles.
 Among them was "(I Wanna) Love My Life Away" which charted at #39 on the "Billboard" Hot 100 on March 4, 1961 and was on the charts for eight weeks.
 The song "Every Breath I Take" charted as high as #42 on September 16, 1961, and was on the charts for eight weeks. "
Town Without Pity" rose as high as #13 on January 27, 1962 and was on the charts for 19 weeks.
 It also features two songs that Pitney had previously written for Ricky Nelson, "Hello Mary Lou" and "Today's Teardrops"; the latter also recorded by Roy Orbison.
Gene Pitney's Big Sixteen, Volume Two is American singer Gene Pitney's tenth album, released on the Musicor label in the United States in 1965.
 The album was released as Gene Pitney's More Big Sixteen on the Stateside label in the United Kingdom.
Gene Francis Alan Pitney (February 17, 1940 – April 5, 2006) was an American singer-songwriter, musician, and sound engineer.
Gene Pitney Sings World Wide Winners is American singer Gene Pitney's fourth album, released on the Musicor label in 1963.
 The album mainly comprised material released on Pitney's first three albums.
 The only new releases were "Mr. Moon, Mr. Cupid & I", "Louisiana Mama" and "Garden of Love".
Gene Italiano is American singer Gene Pitney's eighth album, and first foreign language album, released on the Musicor label in 1964.
 The album features a number of Pitney's biggest early hits recorded in Italian, including "Twenty Four Hours From Tulsa", "Town Without Pity" and "Only Love Can Break a Heart".
"Only Love Can Break a Heart" is the title of a popular song from 1962, performed by the American singer-songwriter Gene Pitney.
 The song was written by Hal David (words) and Burt Bacharach (music) and appears on Pitney's second album "Only Love Can Break a Heart".