Grim Reaper Of Love by The Turtles is a 1966 pop song which includes 5/4 phrases.
Howard Kaylan in an interview in Mojo magazine (October 2009) said about this song: “After ‘You Baby’ had become our third national hit in a row, we were feeling pretty cocky as a band. The Beatles were doing drugs and experimenting with Indian instruments – we could too. So we did. Al Nichol and Chuck Portz put together this 5/4 jazz raga with ridiculous lyrics and, as a band, we fought for its release. But of course the record was just too weird to be a mainstream hit. In fact, I’m still shocked that it did as well as it did. It broke our cycle of Top 30 hits, and we didn’t rebound until ‘Happy Together’ a year later.”