4. 'Machine Gun'
"Machine Gun" was recorded at the height of the Vietnam War and is one of the most frenetic anti-war songs of the era. It's also one of the longest, clocking in at well over 12 minutes, occasionally going past 20 in concert. The version on Band of Gypsys was cut on New Year's Day in 1970 and contains some of the most haunting guitar work of Hendrix's career. By the end, it sounds almost like an actual machine gun, and drummer Buddy Miles' background vocals sound like the screams of a battlefield. If there were still any doubt about the song's message, it was dedicated most nights to the soldiers overseas.