Python Lee Jackson - In A Broken Dream (1972)

Wikipedia: "In a Broken Dream" is a song and single by Australian rock band Python Lee Jackson featuring vocals from Rod Stewart. Released in 1972 it entered the UK chart in September, reaching number 3 in October. Stewart's vocals are not credited on the record label, although the popularity of the song can be attributed to his vocals and star profile." It charted here in the US too, but not too high. It was a huge summer favorite at the same time as "Conquistador" by Procol Harum was a big radio hit.