By 1967, Simon & Garfunkel were the biggest folk duo in the world and got booked to play at the Monterey Pop Festival along with artists like Jimi Hendrix, Jefferson Airplane, and The Who. In the clip below is 3 songs from their performance: ‘Homeward Bound’, ‘Sound of Silence’, and ‘Feelin Groovy’. You can’t help but become mesmerized by the simplicity of just an acoustic guitar and a two-part vocal harmony as it sends shivers down your spine.