"Universal Soldier" is a song written and recorded by Canadian singer-songwriter Buffy Sainte-Marie. The song was originally released on Sainte-Marie's debut album It's My Way! in 1964. "Universal Soldier" was not a popular hit at the time of its release, but it did garner attention within the contemporary folk music community. It became a hit a year later when Donovan covered it. Sainte-Marie said of the song: "I wrote 'Universal Soldier' in the basement of The Purple Onion coffee house in Toronto in the early sixties. It's about individual responsibility for war and how the old feudal thinking kills us all."
"Eve of Destruction" is a protest song written by P. F. Sloan in mid-1964. Several artists have recorded it, but the best-known recording was by Barry McGuire. This recording was made between July 12 and July 15, 1965 and released by Dunhill Records. The accompanying musicians were top-tier LA session players: P. F. Sloan on guitar, Hal Blaine (of Phil Spector's "Wrecking Crew") on drums, and Larry Knechtel on bass. The vocal track was thrown on as a rough mix and was not intended to be the final version, but a copy of the recording "leaked" out to a DJ, who began playing it. The song was an instant hit and as a result the more polished vocal track that was at first envisioned was never recorded. McGuire's single hit #1 on the US Billboard Hot 100 and #3 on the UK Singles Chart in September 1965.
"For What It's Worth" is a song written by Stephen Stills. It was performed by Buffalo Springfield, recorded on December 5, 1966, and released as a single in January 1967; it was later added to the re-release of their first album, Buffalo Springfield. The single peaked at number seven on the Billboard Hot 100 chart. This song is currently ranked #63 on Rolling Stone's list of The 500 Greatest Songs of All Time as well as the eighth best song of 1967 by Acclaimed Music.
"War" is a counterculture-era soul song written by Norman Whitfield and Barrett Strong for the Motown label in 1969. Whitfield first produced the song – a blatant anti-Vietnam War protest – with The Temptations as the original vocalists. After Motown began receiving repeated requests to release "War" as a single, Whitfield re-recorded the song with Edwin Starr as the vocalist, with the label deciding to withhold the Temptations' version from single release so as not to alienate their more conservative fans.