Crosby, Stills and Nash played its second of sold out show at the Greek Theater in Los Angeles last night (Oct. 4) as part of an extension of the band’s “Three Together” tour, playing new material as well as some of the classics that defined ’60s and ’70s rock music.

The band, David Crosby, Steven Stills and Graham Nash, also helped define the ’60s-era counter-culture with songs like “Wooden Ships,” “Ohio,” and “Woodstock.”

The trio, noted for their three-part harmonies played together for the first time at the legendary Woodstock Music and Arts Festival. Before that however, each had established themselves in ’60s-era supergroups.

Crosby played rhythm guitar, sang and wrote songs for The Byrds. Stills was a guitarist, vocalist for Buffalo Springfield, which also included Neil Young, who later joined CSN.

Nash was a guitarist, vocalist and songwriter with The Hollies, one of bands that followed The Beatles to America as part of the British Invasion in the mid 1960s.

The trio toured together earlier this year and also toured as solo act.

For their Greek Theater show, they were backed by Shane Fontayne on guitar, Steve DiStanislao on drums, Kevin McCormick on bass, James Raymond on keyboards and Todd Caldwell on organ.

Cosby released his first solo album CROZ in two decades earlier this in January on Blue Castle Records. It debuted at No. 36 on album charts.

Stills is coming off a solo 17-date tour that wrapped in June and also toured with The Rides, his blues-rock trio with Kenny Wayne Shepherd and Barry Goldberg. Their album Can’t Get Enough was released last summer, according to the group’s Web site.

Nash recently wrapped a solo tour and has been promoting his autobiography “Wild Tales: A Rock & Roll Life,” published by Crown Publishing Group.

Check out the videos below, let us know your thoughts and be sure to follow IM on Twitter for the latest music news from the road.