As a contrast to the ‘Progressive Pop Sounds’ sets from Cherry Red Records subsidiary label, Grapefruit, the ongoing ‘Underground Sounds’ series from Esoteric opts for something far more rock oriented. Early collections covering 1968 and ’69 resulted in fine, but unadventurous sets of tunes, and as the series moves into the 70s, fans can expect a similarly accessible approach. Although the four disc delve into 1970 doesn’t necessary dig too deep for obscurities, it still plays very well as a compilation in its own right. In a little over four hours, it serves up nostalgia, unfamiliar curiosities and enough genuine classics to give a solid overview of the year’s prog-leaning and guitar heavy sounds.