Question: Who is the lead singer of the band that recorded Tremolo?

Context paragraphs:
Tremolo (EP): Tremolo is an extended play by My Bloody Valentine, released in February 1991 by Creation Records.  The title is a reference to the band's heavy usage of guitar tremolo and vibrato to create blurred, dreamlike tones.  (Kevin Shields' method of strumming chords while simultaneously bending his guitar's tremolo/whammy bar was referred to as "glide guitar".)

Lead vocalist: The lead vocalist, main vocalist, lead vocals or lead singer in popular music is typically the member of a group or band whose voice is the most prominent in a performance where multiple voices may be heard.  The lead singer either leads the vocal ensemble, or sets against the ensemble as the dominant sound.  In vocal group performances, notably in soul and gospel music, and early rock and roll, the lead singer takes the main vocal part, with a chorus provided by other band members as backing vocalists.

Rock Star (TV series): Rock Star is a television series produced by Mark Burnett, David Goffin, and Lisa Hennessy in which aspiring singers from all around the world competed to become the lead singer of a featured group.  It debuted on CBS on July 11, 2005, to mediocre ratings.  The show was hosted by television personality and commercial spokeswoman Brooke Burke and Jane's Addiction & Red Hot Chili Peppers lead guitarist Dave Navarro.  In Australian band INXS chose J.D. Fortune as their new lead singer.  For , the band Rock Star Supernova chose Lukas Rossi as the lead singer of their new supergroup.

Kevin Shields: Kevin Patrick Shields (born 21 May 1963) is an American-born Irish musician, singer-songwriter, composer and producer, best known as the vocalist and guitarist of the alternative rock band My Bloody Valentine.  Shields performed in a number of small unsuccessful bands in Dublin, Ireland, as a teenager, before forming My Bloody Valentine with drummer Colm Ó Cíosóig in 1983.  Although initially experiencing limited success, the band would later become extremely influential on the evolution of alternative rock with their two original studio albums "Isn't Anything" (1988) and "Loveless" (1991), both of which pioneered a subgenre known as shoegazing.  Shields' texturised guitar sound and his experimentation with his guitars' tremolo systems resulted in the creation of the "glide guitar" technique, which became a recognisable aspect of My Bloody Valentine's sound, along with his meticulous production techniques.

Dado Topić: Adolf "Dado" Topić (born 4 September 1949, Siverić) is a rock musician from Croatia and the former Yugoslavia.  He was the lead singer and founder of Time, a 1970s progressive rock band.  From 1970 to late 1971, he was also the lead singer of the popular prog-rock band Korni Grupa (also known as The Kornelyans).  He is a rock musician from Croatia and the former Yugoslavia.  He was the lead singer and founder of Time, a 1970s progressive rock band.  From 1970 to late 1971, he was also the lead singer of the popular prog-rock band Korni Grupa (also known as The Kornelyans).  He is a male vocalist who sang the entry from Croatia in the Eurovision Song Contest 2007, together with the band Dragonfly.

The Passions (American band): The Passions are an American doo-wop group from Bensonhurst, Brooklyn.  The quintet recorded a few demos in 1958, at which time Tony, Albee and Vinny began looking for replacements who were more career-minded.  Another group in Bensonhurst had what they needed; when the three Sinceres heard Runarounds lead singer Jimmy Gallagher, they knew he was the one for them (Jimmy’s previous group, the Palladiyms, included Joe DiBenedetto, who later formed "The Four-evers".) The Sinceres weren’t sure how to approach Jimmy, so they followed him home one night and knocked on his door.  After convincing his mother that they only wanted to sing with her son, not mug him, the foursome went to a nearby park and ended up harmonizing for hours.  They were now a quartet, with Jimmy on lead, Tony on first tenor, Albee on second tenor, and Vinnie on baritone.n 1959, while the Mystics were recording "Hushabye" at their first session, their friend Tony Armato was there cheering them on promoting his own group to their manager, Jim Gribble.  Gribble soon signed the Sinceres and renamed them the Passions.  He gave them a demo by a duo of studio singers who called themselves the Cousins.  The song was "Just to Be with You" written by Mary Kalfin.  The Cousins were Paul Simon and Carole King.  By the time the group recorded "Gloria" Vinny had left and been replaced by Gallagher’s friend Lou Rotondo.  Also in 1960 Lou Rotondo and Albie Galione, along with Albie Contrera of the Mystics, sang behind Clay Cole on "Here, There, Everywhere" (Roulette), single that became popular in the New York area.  Audicon Records lost the group’s next release, the harmony rocker "Made for Lovers."  The group recorded a few more sides for Audicon which were leased to Jubilee and Octavia.  Released in August 1959 on Sol Winkler’s Audicon label, the Passions’ impeccable harmonies and Gallagher’s impassioned lead put "Just to Be with You" on radios across America.  It was a top 20 hit in many eastern cities and it charted nationally, rising to number 69.  The follow-up out of Audicon’s 1674 Broadway digs was twice as good.  Both sides—the harmony filled "I Only Want You" and the beautiful Billy Dawn Smith ballad "This Is My Love" –vied for radio play and sales throughout the states.  They were managed by Jim Gribble who managed several doo-wop groups including the Mystics and The Jarmels, and worked with producer songwriter Stan Vincent.  In the late 1990s, they reunited with the Mystics and the Classics for the Brooklyn Reunion Show.  Lead singer Jimmy Gallagher left the Passions in 1960 to join the Navy, but later sang with The Legends of Doo Wop in 1998.

Al Barr: Alexander Martin Barr (born January 21, 1968) has been the lead singer of the Dropkick Murphys since 1998.  He was also a founder and lead singer for The Bruisers, which he helped form in 1988 in Portsmouth, New Hampshire.  His first band circa 1984, was called D.V.A. (Direct Vole Assault).  He also went on to front 5 Balls of Power, with future members of Scissorfight, The Radicts, L.E.S. Stitches, and US Bombs, before he formed The Bruisers.  His band the Bruisers had played many shows with Boston's Dropkick Murphys, and when Dropkick lead singer Mike McColgan quit the band in 1998 the Murphys asked Barr to be the new lead singer.  The first album the Dropkick Murphys released with Barr as singer was 1999's "The Gang's All Here".

Tim Maurer: Timothy Robert "Tim" Maurer (born October 10, 1980) is an American singer, best known as the former lead singer of third-wave ska band Suburban Legends.  He has left the band on two separate occasions.  The first was in 2000 after the recording of Origin Edition.  He rejoined the band in early 2002 after his replacement singer Chris Batstone left the band.  He officially left the band again in September 2005 after the band's third consecutive appearance on the Jerry Lewis MDA Telethon, performing a new song entitled "Moving Closer."  The band's former trumpet player, Vincent Walker, rejoined the band for the performance, then took over as lead singer afterward.  Maurer returned for a final performance with the band on November 29, 2005 at Huntington Beach High School for a benefit show for the Ryan Dallas Cook Memorial Fund, which was set up following the death of Suburban Legends' trombonist Dallas Cook.

Barbados (band): Barbados is a Swedish dansband, formed in 1992, who have had several Swedish chart successes.  The band, with lead singer Magnus Carlsson, became widely known after their second place in Melodifestivalen 2000.  The band has replaced lead singer three times.  First Magnus Carlsson left the group in 2002 and later became a member of the group Alcazar.  Mathias Holmgren, a former Fame Factory student was the new lead singer, but was forced to leave the band in 2004.  Chris Lindh replaced him, before leaving the band in 2007.  The current lead singer is Björn Lagerström.

Rockaholic: Rockaholic is the eighth studio album by American rock band Warrant, released on May 17, 2011.  The album features the band's third lead singer, Robert Mason, who replaced original lead singer Jani Lane in 2008.  Lane returned to the band for a 2008 reunion tour but by the end of the year, he and the band parted ways for the second time.  Lane had previously replaced former lead singer Jaime St. James, who performed lead vocals on the band's last album, "Born Again", and who initially replaced Lane in 2004.

Supporting paragraphs: Tremolo (EP) Kevin Shields
Answer: Kevin Shields