Modest Mouse is known as genre-bending indie rock band on their way up. Guided by Voices has been performing together for over 10 years, but they have recently decided to call it quits. This is one of the last performances of the band.

This episode has a theme: musical innovation. Both featured bands have outgrown the labels music experts have put on them to create unique sounds and haunting melodies.

The Flaming Lips perform emotional, artsy indie-rock. While, The Shins focus on clever, witty pop songs.

This episode's theme is big innovation. Polyphonic Spree has more than 20 members who dress in colorful choir robes. Their pop epics and energetic live performances have inspired a cult-like following. Next, Grammy award winners, Ozomatli, brings their 10-piece band to the stage. The L.A. band fuses Latin rhythms, Middle Eastern and African beats with modern hip-hop.

Austin favorite, Lyle Lovett, has gained national recognition by expanding the sound of country to include jazz, blues and pop. Pianist Jamie Cullum is a London sensation who infuses rock with jazz and dance.

Strong and unique voices mark this episode. Michael McDonald has a signature sound all his own. While, Joss Stone is a young singer with a powerful and soulful voice.

Irish singer/songwriter, Damien Rice, brings his soulful lyrics to the ACL stage. Patty Griffin is a long-time ACL viewer whose personal songs highlight her graceful voice.