I haven't heard this 'Heep' album for maybe 25+ years but I remember it had a nice 'heavy riff' number on it but I can't remember the name of the track?.
A 'underrated' Purple album (or it was back in the late 1970s) but actually it is possibly one of the bands better albums and stands up well some 47 years later in 2022 although it doesn't feature Ritchie on guitar but Tommy Bolin but in my humble opinion it stands along side along both Machine Head and Burn although it is quite 'funky' which for 1975-76 especially in the USA sounded great!.