What #1 single came from the Neil Young album that is considered to be the predecessor of "Harvest Moon"?
Harvest Moon (album):  Many of the musicians appearing on it also appeared on his 1972 album "Harvest", and it is considered by many to be like a "sequel" to "Harvest". Harvest (Neil Young album):  It topped the "Billboard" 200 album chart for two weeks, and spawned two hit singles, "Old Man", which peaked at #31 on the "Billboard" Hot 100, and "Heart of Gold", which reached #1.
Heart of Gold