High Moon Records’ new collection from Curt Boettcher and Friends, Looking for the Sun, takes its title from a 1968 Boettcher production for singer-songwriter Gordon Alexander. Given Boettcher’s participation, one might expect the song to be a dreamy SoCal pop fantasia with richly layered harmonies. But instead it’s a rather sparse, dark rumination with an acid coffeehouse feel. Alexander, in the song at least, doesn’t find the sun, and arguably, neither did Curt Boettcher in his lifetime. But the late, enigmatic visionary (The Association, Sagittarius, The Millennium) left behind a remarkable and…