Earlier today, it was pointed out that will.i.am's "Let's Go" sounded an awful lot like Arty & Mat Zo's "Rebound," to the point where Mat Zo deleted his Twitter in anger and Anjunabeats, the label that released "Rebound" in April of 2011, is said to be looking into the situation. Now, it looks like he might have cribbed a chord progression from Sandro Silva & Quintino's "Epic":

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(2:15 in)

With willpower apparently being released on April 19 (this Friday), there's definitely something going on. Whatever the case may be, there's no official word from will.i.am at this time.