This release from Rage Against the Machine's Zack de la Rocha and former Mars Volta drummer Jon Theodore came out back in July 2008. I think its interesting to see what some jam sessions lead to. At a mere 5-songs, the repetitive but inspired debut eponymous EP seems like a good weekend jam that was carved into entrancing neo-funk hip hop riff rock, without guitars. You can check them out at www.onedayasalion.org. Thanks to Disqo for the tip.