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Bass guitar was Krist Novoselic's primary instrument in Nirvana, the iconic grunge band. As the bassist, Novoselic provided the rhythmic foundation and harmonic support for the band's distinctive sound. His heavy, distorted bass lines interplayed with Kurt Cobain's guitar and Dave Grohl's drums to create a powerful and dynamic musical experience. Novoselic's bass playing contributed significantly to Nirvana's raw and energetic style, helping to define the grunge genre.