What's the story behind this odd yet beautiful song? Did Brian record the instrumental specifically for American Spring, or was it considered a possible Beach Boys song? I remember reading in passing somewhere that it may have been tossed around as a closer for a reworked 1970s SMiLE. Judging by the So Tough and Holland, Brian seemed to only want to contribute 'masculine' tracks to Beach Boys records (like "Marcella"). It's an example of a very interesting style explored by Brian around the Holland era, with synthesizers interspersed with pianos and other instruments to create what could almost be called neoclassical pop. Other examples would be "Funky Pretty" and "It's Like Heaven". He explores this sound more on Love You, but the synthesizers were emphasized a lot more.
I agree. This is a really cool, spooky track. A lot of the stuff Brian was doing around this time I can't totally get behind, but this is one where that approach realy worked.