Curved Air - 'Back Street Luv'

My latest obsession is Sonja Kristina and Curved Air. I recall Curved Air's hit, 'Back Street Luv', from 1971 (I think they only had the one hit) with its mysterious, throbbing sound fronted by the exotic Sonja. Sonja was also in the London production of 'Hair' in which she played the role of love-lorn Crissy.

I've been listening to 'Back Street Luv' and am delighted to learn that Sonja didn't just vanish when Curved Air split in the mid-70s, but continued making music and, indeed, touring. Curved Air have got back together as well. I will delve further...