Question: 4:21 ...The Day After is an album produced by man who was the leader of what group? 
Context: Some People Change is the fifth studio album by the American country music duo Montgomery Gentry.  It was released by Columbia Records Nashville on October 24, 2006.  Certified gold in the United States, the album produced three singles on the "Billboard" Hot Country Songs charts: the title track (previously cut by Kenny Chesney on his 2004 album "When the Sun Goes Down"), "Lucky Man", and "What Do Ya Think About That".  The title track was a number seven hit on the Hot Country Songs charts, while "Lucky Man" became the duo's third Number One hit, and "What Do Ya Think About That" reached number three. Nothing But The Truth is the second studio album by Australian music group Southern Sons.  The album was released in Australia in November 1992 and reached number 26 on the ARIA charts.  The album produced by Louis Shelton and released through RCA Records, was re-released in 1993 with the bonus track, "Silent Witnesses".  The album produced five singles, and was also released in the Australian iTunes Store as a digital download in 2010. 4:21 ...The Day After is the fourth studio album by American rapper and Wu-Tang Clan member Method Man.  The album was released on August 29, 2006 by Def Jam Recordings, to mostly positive reviews.  The album features guest appearances from Fat Joe, Styles P, Redman, and various Wu-Tang Clan members.  Production is handled by RZA, Havoc, Kwamé, Erick Sermon and Scott Storch, amongst others.  U-God appears in the song "The Glide" but isn't credited. Mistaken Identity is the second album by Australian singer Delta Goodrem, released in Australia on 8 November 2004, a day before Goodrem's twentieth birthday, by Epic and Daylight Records.  Goodrem co-wrote some of the album with Guy Chambers, who also produced the album with Richard Flack and Steve Power.  "Mistaken Identity" debuted at number-one on the Australian Albums Chart making it her second number-one album but the sales did not match up to her previous album "Innocent Eyes" (2003) which sold 4.5 million copies worldwide.  The album produced Goodrem two more number-one singles with "Out of the Blue" and "Almost Here", and the rest of the albums singles; "Mistaken Identity" and "A Little Too Late", became top twenty hits.  The album features Goodrem's first duet, "Almost Here" (with Irish singer Brian McFadden). We All Get Lucky Sometimes is the fourth studio album by American country music singer Lee Roy Parnell.  It was released in 1995 as his first album for Career Records, a sister label of Arista Nashville.  This album produced five singles for him on the "Billboard" country singles charts.  "A Little Bit of You" was the first, at #2, followed by "When a Woman Loves a Man" (#12), "Heart's Desire" (#3), "Givin' Water to a Drowning Man" (#12), and the title track (#46).  It is also his highest-peaking album on Top Country Albums, peaking at #26 there. This is the discography of Bethany Joy Lenz, an American singer documenting albums, singles and music videos released by Lenz.  Lenz released her first album at the age of 21, after her exit from the soap "Guiding Light".  She then experienced success with her second album produced by her friend Jeff Cohen and sold during the OTH tour in which she performed with some co-stars from "One Tree Hill".  Her third album, produced by Ron Aniello, never came to life due to changes behind the label Epic Records.  She then teamed up with her friend Amber Sweeney to create the duet Everly in 2008.  After three albums and four years of collaboration, the band split.  Soon after that, Lenz released her fourth solo album produced once again by her friend Ron Aniello, and sold during the "Rock the Schools" Concert.  A year later Jeff Cohen produced her fifth solo album which was sold to attendees of the One Tree Hill Convention "From Wilmington to Paris" and later 500 autographed first edition copies of the CD were sold on Etsy.  In 2015, she released a sneak peek EP of an upcoming album through Kickstarter but the hard copies promised to the backers were sent 2 years later, and the full album never came to life due to legal proceedings with the creator of the project.  She then teamed up with artists Daniel Shyman & Doo Crowder to release two songs for Christmas 2015.  And they went on tour during summer 2016 under the name of "Joy Lenz and the Fire pit Band". Steal Another Day is an album released in 2003 by country music artist Steve Wariner and his first studio album for SelecTone Records.  The album produced two singles on the "Billboard" Hot Country Singles chart "I'm Your Man" and "Snowfall on the Sand" which reached 58 and 52 respectively. Robert Fitzgerald Diggs (born July 5, 1969), better known by his stage name RZA ( "rizza"), is an American rapper, record producer, musician, actor, filmmaker and author.  A prominent figure in hip hop, RZA is the "de facto" leader of the Wu-Tang Clan.  He has produced almost all of Wu-Tang Clan's albums as well as many Wu-Tang solo and affiliate projects.  He is a cousin of the late group-mate Ol' Dirty Bastard and GZA (who also formed the group with RZA).  He has also released solo albums under the alter-ego Bobby Digital, along with executive producing credits for side projects. Loose, Loud, & Crazy is the third studio album of American country music singer Kevin Fowler, and his fourth album overall.  It was his debut album for Equity Music Group, a label started by country music singer Clint Black.  The album produced three singles: "Ain't Drinkin' Anymore", "Hard Man to Love", and "Don't Touch My Willie".  The former single peaked at #49 on the Hot Country Singles & Tracks (now Hot Country Songs) chart, while the latter two singles failed to chart.  Fowler wrote or co-wrote all but one of the songs on the album. The Notorious Cherry Bombs is the self-titled debut album by the American country music group The Notorious Cherry Bombs, a band that formerly served as country singer Rodney Crowell's backing band in the 1980s.  This is the band's only studio album, with Crowell and Vince Gill alternating as lead vocalists.  Released in 2004 on Universal South Records, the album produced one chart single in "It's Hard to Kiss the Lips at Night That Chew Your Ass Out All Day Long".  "Making Memories of Us" was previously recorded by Tracy Byrd on his 2003 album "The Truth About Men", and later in 2004 by Keith Urban on his album "Be Here"; Urban's rendition was released as a single, reaching Number One on the country charts in 2005.
Answer: Wu-Tang Clan