Question: Special Generation sang heart felt harmonic background vocals on several MC Hammers hit releases like which track considered to be Hammer's signature song and is his most successful single?
Context: "What About Love?"  is a song originally recorded by Canadian rock group Toronto but is best known for the 1985 release by the rock group Heart.  The song was Heart's "comeback" single.  It was the first Heart track to reach the top 40 in three years, and their first top 10 hit in five.  It was released as the first single from the band's self-titled 1985 album, "Heart", as well as their first hit single on their new record label, Capitol Records.  Grace Slick and Mickey Thomas, co-lead vocalists of Starship at the time, provide additional background vocals on the song. Restless Heart is an American country music band established in 1984.  The band's longest-lasting lineup has consisted of Larry Stewart (lead vocals), John Dittrich (drums, background vocals), Paul Gregg (bass guitar, background vocals), Dave Innis (piano, keyboards, rhythm guitar, background vocals), and Greg Jennings (lead guitar, mandolin, background vocals).  Verlon Thompson was the band's original lead singer, but he was replaced by Stewart before the band signed to RCA Records Nashville.  Stewart departed for a solo career in 1992; during this time, Innis, Gregg, and Dittrich alternated as lead vocalists, until Innis also left.  The band was on hiatus from 1994 to 1998.  During this hiatus, Dittrich briefly recorded as one-third of The Buffalo Club, and Jennings joined Vince Gill's road band.  Stewart, Gregg, Dittrich, and Jennings reunited briefly in 1998 to record new material for a greatest hits album; they, along with Innis, reunited again in 2004, and this lineup has remained ever since. Moore studied art before moving to British Columbia to pursue music.  Her first hit came by co-writing the song "Heaven in Your Eyes" (with John Dexter), which would later be recorded by Loverboy for the "Top Gun" soundtrack in 1986.  She then worked with Barney Bentall and Colin Nairne from the band Barney Bentall and the Legendary Hearts, providing background vocals on their self-titled 1988 album "Barney Bentall and the Legendary Hearts".  She sang background vocals on and appeared in the music video for the Legendary Heart's "She's My Inspiration" song from that album.  Her association with Bentall and Nairne paid off, as CBS Records in Canada soon awarded her a recording contract. Little Texas is an American country music band founded in Nashville, Tennessee, in 1988 by Tim Rushlow (lead vocals, rhythm guitar), Brady Seals (lead and background vocals, guitars, keyboards), Del Gray (drums), Porter Howell (lead guitar, background vocals), Dwayne O'Brien (rhythm guitar, lead and background vocals), and Duane Propes (bass guitar, background vocals).  Signed to Warner Bros.  Records in 1991, Little Texas released its debut album "First Time for Everything" that year.  The album's lead off single, "Some Guys Have All the Love", reached a peak of No. 8 on the "Billboard" Hot Country Singles & Tracks charts.  Little Texas continued to produce hit singles throughout the mid-1990s, including the Number One single "My Love" and six more top ten hits.  Their debut album earned a gold certification from the Recording Industry Association of America (RIAA), while 1993's "Big Time" was certified double platinum and 1994's "Kick a Little" was certified platinum. "Achy Breaky Heart" is a country song written by Don Von Tress.  Originally titled "Don't Tell My Heart" and performed by The Marcy Brothers in 1991, its name was later changed to "Achy Breaky Heart" and performed by Billy Ray Cyrus on his 1992 album "Some Gave All".  As Cyrus' debut single and signature song, it made him famous and has been his most successful song.  It became one of the first singles ever to achieve triple Platinum status in Australia and also 1992's best-selling single in the same country.  In the United States it became a crossover hit on pop and country radio, peaking at number 4 on the "Billboard" Hot 100 and topping the Hot Country Songs chart, becoming the first country single to be certified Platinum since Kenny Rogers and Dolly Parton's "Islands in the Stream" in 1983.  The single topped in several countries, and after being featured on "Top of the Pops" in the United Kingdom, peaked at number 3 on the UK Singles Chart.  It remains Cyrus's biggest hit single in the U.S. to date, and his only one to reach the top 10 of the "Billboard" Hot 100.  Thanks to the video of this hit, there was the explosion of the line dance into the mainstream, becoming a craze.  The song is considered by some as one of the worst songs of all time, featuring at number two in VH1 and "Blender"'s list of the "50 Most Awesomely Bad Songs Ever." The Road Hammers is the debut album of The Road Hammers, a Canadian-based country rock band fronted by singer Jason McCoy.  Released in 2005 on Open Road Recordings, it produced the singles "I'm a Road Hammer", "East Bound and Down" (a cover of the Jerry Reed song), "Nashville Bound" and "Girl on the Billboard" (a cover of the Del Reeves song).  Each of these songs reached Top Ten on the Canadian country music charts for The Road Hammers.  The song "A Heart with Four-Wheel Drive" was previously recorded by 4 Runner on their self-titled album, and "The Hammer Going Down" by Chris Knight on his self-titled debut album. This Time It's for Real was the second album by seminal New Jersey Rock/R&B band Southside Johnny and the Asbury Jukes.  Like their first album "I Don't Want To Go Home" this album features a number of guest artists and duets, a trend that would be dropped for their next album "Hearts of Stone".  "Check Mr. Popeye" features Kenny 'Popeye' Pentifallo on vocals with The Coasters on background vocals.  The track "First Night" features The Satins on background vocals and Steven Van Zandt on duet vocals.  "Little Girl So Fine" features background vocals by The Drifters.  The album also features a cover of Aretha Franklin's "Without Love". "U Can't Touch This" is a song co-written, produced and performed by MC Hammer from his 1990 album "Please Hammer, Don't Hurt 'Em".  The track is considered to be Hammer's signature song and is his most successful single. "Super Freak" is a 1981 single produced and performed by Rick James.  The song, co-written by James and Alonzo Miller, was first released on James' album "Street Songs" and became one of James' signature songs.  It features background vocals from Motown labelmates The Temptations—in which the bass singer is James' uncle Melvin Franklin—and Canadian singer Taborah Johnson.  "Freak" is a slang term for a very promiscuous girl, as described in the song's lyrics, "...a very kinky girl / The kind you don't take home to mother". " Rolling Stone" magazine ranked the song #477 in its list of the 500 Greatest Songs of All Time.  Nine years later, MC Hammer's 1990 hit "U Can't Touch This" sampled it.  The song was nominated for the Grammy for Best Male Rock Vocal Performance at the 1982 Grammys. Special Generation was an American new jack swing/urban R&B quintet that was the brainchild of M.C. Hammer.  The group members are Lead singer Maquet Robinson, Kendrick Washington, Fernando Carter, Charles Salter and Maurice Dowdell.  The group sang heart felt harmonic background vocals on several MC Hammers hit releases from the 90's (such as "U Can't Touch This", "Help the Children" and "Have You Seen Her"), before becoming major recording artists in their own right in early 1990.  That same year, their debut album, "Take It To The Floor" which was released off of Hammer's Bust it / Capitol Records label, debuted their first song "Love me just for me " which climbed the charts with a bullet for 21 weeks and finally went gold, their debut album was released and did well in the music/recording industry due in part to the popular ballad "Love Me Just For Me" (peaked at #04 on the "Billboard" Hot 100 in December 1990) and a follow up mid-tempo R&B Top Ten Hit "Spark of Love".  Special Generation went on in 1992 to release there sophomore album entitled "Butterflies" in which the group recorded hit singles with Troop member Steven Russell whom produced and sang on the album,
Answer: U Can't Touch This