Question: How many top-40 hits did the singer of "Don't Forbid Me" have?

Context articles: Tanya Tucker
Livingston Taylor
Information Society (album)
KNLV (AM)
Mike Stock (musician)
Don't Forbid Me
Edwin McCain
Luba (singer)
Pat Boone
Love Remains the Same (song)

Tanya Denise Tucker (born October 10, 1958, in Seminole, Texas) is an American country music artist who had her first hit, "Delta Dawn", in 1972 at the age of 13.
 Over the succeeding decades, Tucker became one of the few child performers to mature into adulthood without losing her audience, and during the course of her career, she notched a streak of top-10 and top-40 hits.
Livingston Taylor (born November 21, 1950) is an American singer-songwriter and folk musician.
 Born in Boston, Massachusetts, and raised in Chapel Hill, North Carolina, he is the brother of singer-songwriter James Taylor, singer-songwriter Kate Taylor, musician and older brother Alex (d. 1993), and innkeeper and singer Hugh Taylor .
 With a career of over fifty years, Livingston is most notable for his top-40 hits “I Will Be In Love With You”, “First Time Love”, and “I’ll Come Running” .
 Having shared the stage the likes such as Linda Ronstadt, Jimmy Buffett, and Jethro Tull , he continues to perform over 75 shows a year, nationally and internationally.
 He is currently a faculty member at Berklee College of Music .
Information Society is an album by the synthpop, techno and freestyle band Information Society.
 It was their first release under a major label, after two independently released albums.
 Numerous top-40 hits quickly led the group to fame and fortune.
 The album was certified gold (selling 500,000 units) after five months in the U.S. and also went gold in Brazil in just 10 days.
 The album had several chart-topping hits such as "What's on Your Mind (Pure Energy)", "Walking Away", and "Running".
 It was one of the only albums released in the seldom-used CD+G format.
KNLV (branded as The Mighty 1060) is a radio station licensed to serve Ord, Nebraska.
 broadcasting an Oldies music format featuring the top-40 hits from the 1960s through 1990s.
 The Mighty 1060 also features farm reports, local news, weather and local high school sports play-by-play broadcasts.
 It operates on AM frequency 1060 kHz and is under ownership of MWB Broadcasting II.
Michael Stock (born 3 December 1951) is an English songwriter, record producer and musician, best known for being a member of the songwriting and production team Stock Aitken and Waterman that achieved success in the 1980s and 1990s.
 He has written or produced numerous worldwide hits including 18 No. 1 records in America and the UK, and over a hundred top-40 hits.
 Stock is one of the most successful songwriters of all time as recognised by the "Guinness Book of Records".
 As part of Stock Aitken and Waterman, he is acknowledged as the most successful producer-songwriter in British chart history and holds the record for the most No. 1 records with different acts, with 11.
 In the UK Singles Chart he has written 54 top-ten hits including 7 number ones.
"Don't Forbid Me" is a popular song by Charles Singleton, that was a #1 hit for Pat Boone in 1957.
 Among Singleton's huge number of compositions was Tryin' to Get to You, which had previously been recorded by Elvis Presley at Sun Records.
Edwin McCain (born January 20, 1970), is an American singer-songwriter and musician.
 He was able to find success with his song "I'll Be."
 His songs "I'll Be" (1998) and "I Could Not Ask for More" (1999) were radio top-40 hits in the U.S., and five of his albums have reached the "Billboard" 200.
Luba (born Lubomyra Kowalchyk (Ukrainian: Любомира Ковальчук ), April 24, 1958, Montreal, Quebec, Canada) is a Canadian musician, singer, songwriter and recording artist of Ukrainian descent.
 She was commercially active from 1980 to 1990, 2000 to 2001 and is active again from 2007 to present.
 She was initially the vocalist for a band named "Luba" before signing as a solo artist under that name.
 She has released five full-length albums and two EPs as a solo artist.
 (Two albums were released as a member of a band – 1973's Zorya, (Via Zorya) and 1980's "Chain Reaction" – with a band named "Luba".)
 Two of her albums are certified platinum by the Canadian music industry (sales in excess of 100,000 units).
 She has nine top-40 hits on the Canadian pop charts.
 Her signature song is "Everytime I See Your Picture" (1983).
 Her most successful song is a cover of Percy Sledge's "When a Man Loves a Woman" which reached No. 6 on the Canadian pop chart and No. 3 on the Canadian adult contemporary chart (1987).
 She is a three-time winner of the Canadian music industry Juno Award for Female Vocalist of the Year (1985–1987).
 Her success is limited to her native Canada as she has never charted in the US or elsewhere.
 In addition to her Juno Awards, Luba has also received CASBY and Félix Awards, and a Black Music Association Award for "Female Entertainer of the Year".
 Most recently, her music has been featured on "Canadian Idol".
 She continues to record music under her own independent label.
Charles Eugene "Pat" Boone (born June 1, 1934) is an American singer, composer, actor, writer, television personality, motivational speaker, and spokesman.
 He was a successful pop singer in the United States during the 1950s and early 1960s.
 He sold more than 45 million records, had 38 top-40 hits, and appeared in more than 12 Hollywood films.
"Love Remains the Same" is a song by British artist Gavin Rossdale.
 It was released in May 2008 as the lead single from his album "WANDERlust".
 It entered the "Billboard" Hot 100 at #76 and peaked at #27.
 It unexpectedly became Rossdale's first Top-40 hit in the United States since 1995 when his former band Bush scored hits with "Comedown" and "Glycerine."
 It has since become more successful than Gavin's biggest hits with Bush from the mid-1990s and is now his most successful track.