Final answer:
John Cage did not influence grunge rock bands. His work primarily impacted contemporary classical music.
Step-by-step explanation:
False. John Cage was an American avant-garde composer who was known for his experimental and unconventional approaches to music. While his work had a significant impact on the development of contemporary classical music, it did not directly influence grunge rock bands.
Grunge rock emerged in the late 1980s and early 1990s in the Pacific Northwest, primarily influenced by punk rock and heavy metal. Bands like Nirvana, Pearl Jam, and Soundgarden were central figures in the grunge movement.