"Whether it was human rights, the environment, poverty. They didn't let it wash over them. They would stand up and react," Letterman says of band
"Pac proved we ain't just a character out of someone else's story book. To be human is to be many things at once," rapper says
Eddie Vedder and Co. enthrall crowd with "Alive," "Given to Fly" and "Better Man"
"Spiritually he's been in the studio with me for more than 25 years," producer and musician said of "Get Lucky" collaborator
"I've sold over 300 million albums and 75 million singles," Chic mastermind says. "I just wanted to have one hit record"
"There's a lot of greats in hip-hop that deserve to be here," rapper says
Bassist Lee performed with prog-rock inductees at the Rock and Roll Hall of Fame ceremony
Rocker performed "When Doves Cry" and "The Cross" with Love Fellowship Choir
T.I., YG and Treach also performed on behalf of hip-hop superstar
"To track Joan Baez's involvement in human rights and social justice is to chart the evolution of our own moral awakening," singer-songwriter says
"Tonight is about celebrating that Big Bang ... when we welcomed ELO ... a musical galaxy right between Chuck Berry and Beethoven," says musician
Prog legends also erupted through "Owner of a Lonely Heart" in Brooklyn
"Let us together repeal and replace brutality and make compassion a priority," folk singer says
Baez also revisited songs from The Band, Woody Guthrie with Mary Chapin Carpenter, Indigo Girls
"It's like my dad said, everything comes to him what waits," Jeff Lynne tells Brooklyn crowd