Bo Diddley vs Oscillator

The 1967 Rolling Stones album Flowers, mostly a collection of singles, odd and sods, does contain a few numbers of worth(PLEASE skip right over My Girl though!). What really impressed me after not listening to it for many years was Please Go Home, a cacophonous  mixture of Bo Diddley guitar, Charlie Watts' pounding drums, Jagger's vocals pushed into an echo-smeared universe, AND, lurking in the mix, a trippy oscillator! I remember digging this alien sound in my teens and not knowing what it was. Was this my introduction to electronic music, other than the joyful activity of tuning in white noise, jarring static and ghost voices on my father's car radio? Who knows...but it's wandering electronic tone still makes me smile.