Many of Nirvana's album cuts and B-sides are so catchy, they easily could've been hits: “Drain You” writhes with chunky fuzz chords and sing-along vocals, and “Stay Away” is high-energy dance-punk. But the trio's catalogue also contains tons of ferocious atonality: “Radio Friendly Unit Shifter” and “Tourette's”, both from 1993's In Utero, are slabs of savage, psychically distressing noise rock.