Question: What kind of sound did Kanye abandon a rap and hiphop one for with his fourth album?
Sentence: Rolling Stone journalist Matthew Trammell asserted that the record was ahead of its time and wrote in a 2012 article, "Now that popular music has finally caught up to it, 808s & Heartbreak has revealed itself to be Kanye’s most vulnerable work, and perhaps his most brilliant."
Answer in sentence: no