聚焦具有历史意义的洛杉矶Laurel Canyon，这里诞生了一些标志性音乐团体，如飞鸟乐队、海滩男孩、水牛春田以及爸爸妈妈乐队。

At first glance, you might dismiss Journey Through the Past as just another sci-fi quickie. Please DON’T do that. This 75-minute, R-rated musical documentary is a probing portrait of rock star Neil Young. The film begins in 1966, when Young was still with Buffalo Springfield, and concludes in “the present”-1972, that is. Also appearing are Neil Young’s faithful companions Stephen Stills, Richie Furay, Dewey Martin, David Crosby and Graham Nash. Songs include “Only Love Can Break Your Heart” and “Heart of Gold.” The direction of Journey Through the Past is credited to one “Bernard Shakey”-who also goes by the name of Neil Young ~ Hal Erickson, All Movie Guide

Crosby, Stills & Nash (CSN) were a folk rock supergroup made up of American singer-songwriters David Crosby and Stephen Stills, and English singer-songwriter Graham Nash. When joined by Canadian singer-songwriter Neil Young as a fourth member, they are called Crosby, Stills, Nash & Young (CSNY). They are noted for their lasting influence on American music and culture, and for their intricate vocal harmonies, often tumultuous interpersonal relationships, and political activism.