Neil Young hasn't dipped much into the old-time kiddie songs from this year's Americana in his latest Crazy Horse shows. Instead, he's using this tour to blow minds with intense new tunes that come on like pieces of an in-progress autobiographical song cycle. "Twisted Road" is an acoustic beauty; Young reminisces about hearing Dylan and the Dead on the radio. But "Walk Like a Giant" (also presumably from Young's next album, due this fall) is the mind-blower: an epic feedback monster, stretching to the 20-minute mark. It tackles familiar Young themes – the passing of time, the death of the hippie dream – with furious guitar noise and a whistle-along chorus. "Walk Like a Giant" is a fearsome sound: The old man takes a look at his life, and gets righteously pissed off at what he sees.

“Help Me”

Joni Mitchell wrote and recorded this song for her album Court and Spark, but she had to switch from her regular band to make the song sound exactly the way she wanted. "I had attempted to play my music with rock & roll players," she told Rolling Stone. "They’d laugh, 'Awww, isn't that cute? She's trying to teach us how to play.'" Mitchell switched to a jazz band, Tom Scott’s L.A. Express, and scored the biggest hit of her career in the process.