The 2013 Grammy Awards were the second-most-watched Grammys of the past 20 years, per Nielsen Media Research, with tune-in from more than 28.4 million viewers. The telecast definitely helped drive music sales: Overall album sales were up 17% week over week, while digital track sales increased by 8% during the same time period, the week ending Feb. 17, according to Nielsen SoundScan. But several artists' profiles got an arguably even bigger bump.

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