Assertion: beck's album | /r/HasProperty | 1998's mutations
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Source sentences:
text: Beck and his bandmates hammered out fourteen songs in fourteen days, although just twelve made it onto the album, 1998's Mutations.
text: Adding to his palette, Beck explored the sophistication of Brazilian pop on his next album, 1998’s Mutations (in part named after the psychedelic Brazilian group Os Mutantes); the album earned Beck his third Grammy.