I gave it a 14 - one of the first Genesis songs to catch my ear, and really different from most of the rest of their songs once I got to know more of their catalogue. Always mystified by the lyrics, but I guess that's largely a result of jamming in the studio & scatting vocals as they went?
Love Tony's ballsy synth tone here - helped by a distortion pedal as I recall? Like others mentioned, absolutely love how the instrumental part became more dynamic live!