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"The Sing-Off" performers have landed in the Top Ten on iTunes Top Songs with performances from Delilah landing at No. 8 and No. 9, with their renditions of Bruno Mars' "Grenade" and Adam Lambert's "Whataya Want From Me," respectively.

Only four episodes into the season, "The Sing-Off" is proving to be a music powerhouse by dominating the iTunes Charts week after week. For the past two weeks, the groups have performed renditions of new hits and memorable '60s songs with performances from both genres making the list. Last week "The Sing-Off" held seven of the 10 tracks on the iTunes Top Songs chart from performances on the show's third episode, including 60s classics "The Way You Look Tonight" performed by BYU's Vocal Point, "Can't Take My Eyes Off Of You" performed by YellowJackets and Kinfolk 9's all vocal version of The Beatles' "Let It Be." Additionally, current hits, Estelle's "American Boy" by Afro-Blue, and the opening number, "Somewhere Only We Know" by Keane also topped the charts. In the top 100 Songs chart "The Sing-Off" tops other musical television competitors by holding 17 of the tracks on the list.