Assertion: nirvana's album | /r/HasProperty | formidable
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text: There were no real hard and fast rules for assembling the list, though the albums and singles are so formidable that I felt there was little need to comb through the demos, rehearsal tapes, and songs never officially released (if Cobain didn’t feel the urge to properly record “Pen Cap Chew” or finish “Opinion,” then I didn’t really see the need to rank them).