" (season 1 episode 14) Wayne Brady, as Jackie Wilson, performing "Baby Workout" (season 1 episode 18) LeAnn Rimes, as Connie Francis, performing "Where the Boys Are" (season 1 episode 19) Duncan Sheik, as Bobby Darin, performing "Beyond the Sea" (season 1 episode 19) Vivian Green, as Brenda Holloway, performing "Every Little Bit Hurts" (season 1 episode 20) Rosey, as Ella Fitzgerald performing "Dream A Little Dream Of Me" (season 1 episode 20) B2K & Marques Houston, as The Temptations, performing "My Girl" (season 1 episode 22) The Thorns, as the Beach Boys, performing "Warmth of the Sun" (season 1 episode 23) Third Eye Blind, as The Kinks, performing "All Day and All of the Night" (season 1 episode 23) Ashley Williams, as Sandie Shaw, performing "(There's) Always Something There to Remind Me" (season 1 episode 24) Stacie Orrico, as the lead singer of The Angels, performing "My Boyfriend's Back" (Brittany Snow and Vanessa Lengies were the backup singers on Orrico's cover of the song) (season 1 episode 25) Kelly Rowland, as Martha Reeves of Martha and the Vandellas, performing "Nowhere To Run" (season 1 episode 25) Season two Kelly Clarkson, as Brenda Lee, performing "Sweet Nothin's" (season 2 episode 1) Vanessa Soul, as Barbara Lewis, performing "Baby I'm Yours" (season 2 episode 1) Monica, as Mary Wells, performing "My Guy" (season 2 episode 2) Lil' Kim, as Shirley Ellis, performing "The Clapping Song" (season 2 episode 3) Third Eye Blind, as The Kinks, performing "You Really Got Me" (season 2 episode 4) Kelly Rowland, as Martha Reeves of Martha and the Vandellas, performing "Dancing in the Street" (season 2 episode 5) Alicia Keys, as Fontella Bass, performing "Rescue Me" (season 2 episode 6) Kembra Shannon, as Kim Weston, performing "Take Me In Your Arms (Rock Me A Little While)" (season 2 episode 7) Steadman, as the Dave Clark Five, performing "Do You Love Me" (season 2 episode 7) Hilary and Haylie Duff, as members of The Shangri-Las, performing "Leader of the Pack" (season 2 episode 8) Richie Sambora, as Eric Clapton of the Yardbirds, performing "For Your Love" (season 2 episode 9) Jennifer Love Hewitt, as Nancy Sinatra, performing "These Boots Are Made For Walking" (season 2 episode 10) Brad Paisley, as Ricky Nelson, performing "Dream Lover" (season 2 episode 10) Josh Kelley, as Barry McGuire, performing "Eve of Destruction" (season 2 episode 10) Macy Gray, as Carla Thomas,