American Songwriter has published a list highlighting four duets from the 1960s that the writer considers particularly dreamy and "ethereal," spanning folk, pop and psychedelic influences. The piece is a nostalgic, opinion-led retrospective rather than breaking news, aimed at reminding readers of lesser-celebrated tracks from an era when psychedelia's dreaminess touched many genres.

The selections range from well-known hits to more obscure album cuts. "Some Velvet Morning" by Lee Hazlewood and Nancy Sinatra (1967) reached No. 26 on the Billboard Hot 100, while Simon & Garfunkel's "Scarborough Fair/Canticle" (1968) peaked at No. 11. Joan Baez and Mimi Fariña's "Swallow Song," written in 1964 and recorded in 1965, and Fairport Convention's "Book Song" (1969), featuring Sandy Denny and Iain Matthews with sitar and cello, were never released as singles and did not chart.