Kelly Clarkson is fired up about Taylor Swift's "pitch-challenged" performance at the Grammy Awards and weighing in about the recent comments made by Big Machine Records's Scott Borchetta who called Swift "the voice of this generation." In the same statement, he added, "This is not American Idol. This is not a competition of getting up and seeing who can sing the highest note. This is about a true artist and writer and communicator." Clarkson posted a letter on her blog (via PEOPLE) that she found it "upsetting" that he attacked the reality singing show. "We not only hit the high notes, you forgot to mention we generally hit the 'right' notes as well," the 'American Idol' winner wrote.