Which influential music festival in 1969 marked a significant moment for counterculture and rock music?

The influential music festival in 1969 that marked a significant moment for counterculture and rock music is Woodstock. This festival, held over three days in August, became a symbol of the 1960s counterculture movement, highlighting themes of peace, love, and music in the context of societal upheaval and the Vietnam War. It featured iconic performances from artists such as Jimi Hendrix, Janis Joplin, and The Who, attracting an audience of approximately 400,000 people. Woodstock is often celebrated not just for the music but also for its embodiment of hippie ideals and the spirit of unity that characterized the era.

The other festivals mentioned, while significant in their own right, did not have the same profound impact on the counterculture and rock music trajectory as Woodstock did. Coachella, which began in the late 1990s, represents a different era of music festivals, focusing on a wide array of genres. The Monterey Pop Festival took place in 1967 and is often credited with launching the Summer of Love, but it did not reach the same level of cultural significance as Woodstock. Glastonbury, though well-known today, began in 1970 and thus is outside the relevant context of 1969, making