Couldn't find anything about this 45 on the internet, although I remember reading somewhere that the flip side, "Slums of the City", is the same tune as the New Establishment 45 released on United World. Not sure if it is the same recording or an another recording of the tune. Any knowledge that could be shared would be appreciated.
Anyway, "Ridin' High" starts off with a bit of fuzz guitar, and then settles down into a great soul tune with some nice percussion underneath congas and tambourine over the drums). The lyrics are about being young and not seeing the end - that bit of life when you don't see your mortality - and it's sung with a gravity, a weight, that almost seems at odds with the groove, which is played at a brisk pace.
A highly recommended 45.