Possible Clues:

• Indie band whose name means, literally, 'I have it'
• Nerdy band with 'I Am Not Afraid of You and I Will Beat Your Ass'
• Indie rock band whose name is Spanish for 'I have it'
• Indie rock band that played the Velvet Underground in 1996's "I Shot Andy Warhol"
• Indie band who had a US Top 10 hit with Nuclear War