"Get Together" was their first massive success; it was a Dino Valenti song that the Jefferson Airplane and We Five had already recorded. It didn't hit the charts until after it was used in a public service ad in 1969 (see 1969 in music).
That year, the Youngbloods released Elephant Mountain, which was critically acclaimed but sold poorly. Subsequent efforts were not as popular, and the band soon broke up in 1972 (see 1972 in music). Young went on to lead a moderately successful solo career.