Question: What was the debut single by the singer of the 2009 single "I'll Just Hold On"?

Context articles: Looking for Paradise
Esben and the Witch discography
Girls Fall Like Dominoes
Natsuyo Ishinoda
Helmut Fritz
Never Knew I Needed
John Craig (musician)
Blake Shelton
Troy Olsen
Steven Lee Olsen

"Looking for Paradise" is a 2009 single by singer Alejandro Sanz which features Alicia Keys.
 It is the first single from Sanz's eighth studio album, "Paraíso Express".
 Released through Warner Music via music download on September 23, 2009.
 The song used in "Ugly Betty"'s episode "All the World's a Stage".
The discography of British rock band Esben and the Witch consists of two released albums, one upcoming album, three extended plays, four singles, two promotional singles and 8 music videos.
 In 2009 they self-released their debut EP "33", then released their debut single "Lucia, at the Precipice" on Too Pure in February 2010.
 They then signed to Matador Records and released their debut single for the label "Marching Song" in October 2010.
 This was followed by the "Warpath" single the same month, then their debut album "Violet Cries" in January 2011.
 They released the final single from the album, "Chorea", in April 2011.
 In October 2012 they released the promotional single for "Deathwaltz", followed by their second album "Wash the Sins Not Only the Face" in January 2013.
 They have since left Matador and plan to create their own label.
 They are going to work with Steve Albini on their third album in summer 2014, and plan to release it by Autumn 2014.
 They are on PledgeMusic, which is an online Direct-to-Fan music platform that facilitates musicians reaching out to their fanbase (termed Pledgers) to pre-sell, market, and distribute music projects including recordings, music videos, and concerts.
 On PledgeMusic they are putting pre-orders for their third album up, in which some include a hand-made bonus EP called "And New Life Blossoms From the Ruins", and the money will go towards the recording costs.
 On April 7, 2014, they will release a split EP with Thought Forms, featuring two new songs "No Dog" and "Butoh".
"Girls Fall Like Dominoes" is a song by Trinidadian rapper Nicki Minaj.
 It serves as the seventh single from the Japanese and New Zealand versions of Minaj's debut album "Pink Friday" (2010).
 The chorus is sampled from "Dominos", a 2009 single by British indie rock band The Big Pink.
 "Girls Fall Like Dominoes" was originally released as an iTunes Store bonus track on Minaj's debut album, "Pink Friday"; however it was released later included on all editions of the album in the United Kingdom on March 11, 2011.
 The single was released on April 11, 2011 in Australia.
 It was released on April 15, 2011 as the fourth UK single after "Moment 4 Life".
Natsuyo Ishinoda (石野田 奈津代 , "Ishinoda Natsuyo" , born April 28, 1980) , is a Japanese singer-songwriter from Kōzu-shima in the Izu Islands in Tokyo.
 She released her debut album "Himawari" in 1999.
 Her 2009 single "Haru Sora" is her most successful single, reaching number 39 on Oricon's singles charts.
Helmut Fritz is the stage name of French singer Éric Greff, who was born in 1975 in Forbach, France and who grew up in Béning-lès-Saint-Avold in the Moselle département.
 Greff is known for his 2009 single "Ça m'énerve" ("It Bugs Me"), in which he portrays a German dandy living in Paris.
 The single, produced by Laurent Konrad, was released on March 2009 and rapidly reached number one in France.
"Never Knew I Needed" is a 2009 single written and performed by American R&B singer Ne-Yo for the 2009 Walt Disney Pictures film "The Princess and the Frog".
 The song, produced by Chuck Harmony, is heard during the ending credits of the film and is also the first single from .
 The song had an accompanying music video which was in heavy rotation on the Disney Channel.
 The song was sent to rhythmic radio in the U.S. on October 27, 2009.
 It was released as a digital download on November 3, 2009.
 The song reached number 56 on the "Billboard" Hot R&B/Hip-Hop Songs chart.
 The song also has an official remix that features Cassandra Steen.
John Craig is an American indie pop artist based in Portland, Oregon.
 John's solo project "John Craig & The Weekend" was formed in Portland in 2009.
 Craig gained notoriety in the Portland music scene for his 2009 single "Ticking" which was featured in the motion picture Tucker & Dale vs. Evil (2010 Sundance Film Festival Selection) Sundance Film Festival) along with "Trouble."
 The film also screened at the 2010 South by Southwest Music & Film Festival (SXSW).
 John's debut "Umlaut" EP has garnered industry buzz thanks in part to reviews by the Willamette Week, Rob Cullivan of the Portland Tribune, and Andy Valentine of the Eugene Weekly.
 "Ticking" has also been prominently featured on Portland's 94.7 KNRK and 101.9 KINK.
Blake Tollison Shelton (born June 18, 1976) is an American singer-songwriter, actor, and television personality.
 In 2001, he made his debut with the single "Austin".
 The lead-off single from his self-titled debut album, "Austin" spent five weeks at number one on the "Billboard" Hot Country Songs chart.
 The now Platinum-certified debut album also produced two more top 20 entries ("All Over Me" and "Ol' Red").
 Although the album was released on Giant Records Nashville, he was transferred to Warner Bros.
 Records Nashville after Giant closed in late 2001.
Troy Olsen (born July 12, 1973) is an American country music singer-songwriter signed to EMI Nashville, a sister label to Capitol Records Nashville.
 He co-wrote Blake Shelton's 2009 single "I'll Just Hold On" and Tim McGraw's "Ghost Town Train," a cut from the album "Southern Voice".
Steven Lee Olsen (born November 25, 1985 in Newmarket, Ontario) is a Canadian country music artist.
 He released his debut single "Now" in 2009 on RGK Records, taken from his 2009 debut album "Introducing Steven Lee Olsen".
 He followed his debut single with release of another single "Make Hay While the Sun Shines".