“Best known for the empowering 1966 chart-topper ‘These Boots Are Made for Walkin’,’ Nancy Sinatra managed to create a sound and style all her own, fully separate from that of her famous father” (AllMusic). “She returned to the singles chart with her fusion of rock, country, and pop over a dozen more times … Though Sinatra last reached the U.S. Hot 100 in 1969, her strong-willed, go-go boots-wearing persona endured through acting roles alongside Elvis Presley and Peter Fonda, a 1981 country album with Mel Tillis (Mel and Nancy) (and) a memoir (1985’s Frank Sinatra, My Father) …”
In the late 60s, she worked with Lee Hazlewood on what became a string of hits — most notably ‘These Boots,’ which garnered three Grammy nominations and went gold. Hazlewood is said to have suggested to Nancy, “‘You can’t sing like Nancy Nice Lady anymore. You have to sing for the truckers.’ She later described him as ‘part Henry Higgins and part Sigmund Freud,'” (Financial Times).
Certainly representative of Sinatra’s sound but not a single until 1970, “Highway Song” (originally released in 1967) charted only in the UK, where it reached #21. The tune modulates up a half step at 2:01. Many thanks to Jamie for this contribution!