[1] Prior to her appearance on American Idol, Doolittle worked as a professional back-up singer for, among others, Michael McDonald, Kirk Franklin, Aaron Neville, BeBe and CeCe Winans, Alabama, Jonny Lang, Vanessa Bell Armstrong, Carman, and Anointed.

[6] Two days after the American Idol Season Finale, Doolittle appeared alongside the other nine top ten contestants on Larry King Live.

In an exclusive interview with Good Morning America, Simon Cowell stated that the season six title of American Idol should have rightfully gone to Doolittle.

Her performances included "Proud Mary", which she sang as a duet with Sanjaya Malakar (joked by many critics to compare 'the best and the worst' of Season 6), a Supremes tribute with LaKisha Jones, and a solo rendition of "(You Make Me Feel Like) A Natural Woman".

Writer Stephen Holden of The New York Times described Doolittle as a "phenomenally gifted, stylistically adroit [...] Gladys Knight-Tina Turner hybrid [who] brings a compelling honesty to every phrase she sings," and predicted a successful post-Idol career for her.

[8] Doolittle sang "The Star-Spangled Banner" at Game 5 of the 2007 NBA Eastern Conference Finals between the Cleveland Cavaliers and Detroit Pistons.

[9] She was part of the Michael W. Smith and friends Caribbean Cruise in July 2008 as a guest performer, and joined him on his Christmas tour the same year.

[16] USA Today said of the release "The new material doesn't rely on the same old-school soul of 2009's Coming Back to You, but there's a snap and crackle not only in the funky grooves of You're the Reason, but in the live-wire energy of Doolittle's delivery.

"[17] Since 2011, Doolittle has been co-hosting TVLine.com's weekly American Idol recap web series, Reality Check, with Michael Slezak.

[18] Doolittle has also collaborated with the band Postmodern Jukebox to perform an old-school style cover of Britney Spears's song "Toxic", on their album Squad Goals.

[19] In June 2007, Doolittle visited Zambia with Laura Bush and the Malaria No More organization to distribute life-saving bed nets and raise awareness.