Neil Young may have been the most famous musician at the recent Reject and Protect anti-Keystone XL protest in Washington, D.C. But the folk rock legend has yet to write a song about the pipeline he calls a “terrible idea” that will “do incredible damage to mother Earth.” And that may be just fine. After all, the fight to end fossil fuels is a fight for the future, and for the communities that are exploited by those industries. So, perhaps it’s fitting that the soundtrack to this struggle come not from a 68-year-old white folk singer, but rather a 24-year-old Lakota rapper.