Background: Gnarls Barkley is an American soul duo, composed of singer-songwriter CeeLo Green and producer Danger Mouse. They have released two studio albums, St. Elsewhere (2006) and The Odd Couple (2008). St. Elsewhere was recorded on the Warner Music UK label, and contained their hit single "Crazy" which topped at number two on the US Hot 100, and topped the charts in the UK. It was also nominated at the 2007 Grammy Awards for Record of the Year, and was platinum certified for shipping over 1,000,000 records.
Context: In early March 2008, the duo's second album, The Odd Couple, was leaked over the internet prompting the duo to push the release date up from April 8. In an interview with Entertainment Magazine, Danger Mouse said that he "knew it [the leak] was coming...every day, I expected to get a call saying it leaked, and eventually I got a call saying it leaked." On March 18, 2008, the album became available via download on the iTunes Store and Amazon MP3. Hard copies of the album were released on March 25.  Prior to its official release, Green spoke to the album's anti-formulaic qualities, noting bluntly that "there's no formula to it," and that to expect the same wild success of St. Elsewhere is to neglect the ever-present "risk factor in any artistic endeavor." He called it something of an "act of faith" - a true, earnest attempt to create and disseminate a piece of art to those who would seek out its conception.  They appeared as the musical guest on the April 12, 2008 episode of NBC's Saturday Night Live. They were supposed to be in a Digital Short parodying amateur music videos according to the scrolled text but only appeared in the singing performances of the live broadcast.  On November 11, 2008, they released an EP, Who's Gonna Save My Soul, featuring four versions of the song which originally appeared on The Odd Couple, along with a live version of "Neighbors" and a previously unreleased song, "Mystery Man." A music video for "Mystery Man" was directed by Walter Robot and premiered on Yahoo! Music.
Question: Versions of what song?
Answer: Who's Gonna Save My Soul,

Background: Widespread Panic is an American rock band from Athens, Georgia. The current lineup includes guitarist/singer John Bell, bassist Dave Schools, drummer Duane Trucks, percussionist Domingo "Sunny" Ortiz, keyboardist John "JoJo" Hermann, and guitarist Jimmy Herring. The band's original drummer, Todd Nance, left in 2016. The band was formed in Athens, Georgia, in 1986, and is influenced by the Southern rock, blues-rock, progressive rock, funk and hard rock genres.
Context: John Bell and Michael Houser met in 1981 in their dorm at the University of Georgia. Bell had been playing guitar as a solo act, and invited his new friend Houser, also a guitarist, to join him. They began living together and collaborating on music in that year, writing still-popular songs such as "Driving Song" and "Chilly Water" together. Bassist Dave Schools met Bell and Houser in 1984 and first played with them on February 24, 1985, at the A-Frame house on Weymanda Court in Athens. On February 6, 1986, Houser called childhood friend and drummer Todd Nance to sit in with Houser, Bell, and Schools for a charity event in Athens; it was their first show as "Widespread Panic." The band was named for Houser's once-frequent panic attacks. Texan percussionist Domingo S. Ortiz ("Sunny") began sitting in with the band regularly later that year.  The band played in fraternities and bars regularly before Panic signed a contract with Landslide Records in 1987. In February 1987 the band played the now-legendary series of one dollar Monday night shows at the Uptown Lounge in Athens and the crucial local press began to take notice--FLAGPOLE & Athens Observer art columnist Shan Clark emphasized Widespread Panic's musical virtuosity, songwriting and professionalism. In September of the same year, they recorded their first album, Space Wrangler, at John Keane's studio in Athens. Col. Bruce Hampton is rumored to have delivered the first pressing to the band. Songs on the album included "Chilly Water," "Travelin' Light," "Space Wrangler," "Coconut," "The Take Out," "Porch Song," "Stop-Go" and "Driving Song." After Space Wrangler, touring expanded to include additional northeastern dates, along with Texas, Colorado, the west coast, and internationally to Vancouver, Canada. It was also around this time (late 1988 or early 1989) that Domingo Ortiz joined the band full-time. They played their first show in Colorado in March 1990, opening for Jerry Joseph's band Little Women.  Widespread Panic signed with Capricorn Records in January 1991. Later that year, they released their major label debut, Widespread Panic (a.k.a. Mom's Kitchen). That same year Billy Bob Thornton directed the movie Widespread Panic: Live from the Georgia Theatre which was recorded over two nights in Athens, Georgia.  As the band began to tour more, John Hermann ("JoJo") joined the band as a keyboardist in March 1992 replacing Dixie Dregs keyboardist T. Lavitz who joined the band a year earlier. The band continued to tour throughout the entire US in 1992 joining the famous HORDE tour with Blues Traveler, Phish, and the Aquarium Rescue Unit, among others. They released "Everyday" in March 1993 and "Ain't Life Grand" in September 1994. Panic marked their rise by playing on network television for the first time in November 1994.
Question: What was their debut?
Answer:
They played their first show in Colorado in March 1990, opening for Jerry Joseph's band Little Women.