J.K. & Co. - Suddenly One Summer (1969)
In 1968, a 15 year old songwriter named Jay Kaye left Las Vegas with enough self-written songs for an album and traveled to Vancouver to record that album. When he arrived, he got together with arranger Robert Buckley, also in his teens, and Kaye put together a psychedelic song suite, following a man’s journey from birth to death.
I wouldn't consider this one of the top must-listen psychedelic albums of the era, but it's quite an enjoyable listen and seems all the more impressive considering the young age of the songwriter who penned these tunes.