I've always been a huge fan of Tera Melos. My dad and I caught them live right after the release of Patagonian Rats. They're all very kind dudes. The album is innovative and catchy. It's also complex.
Also recommended by Rafa Palomo, Peter Richardson, Brad Cryan and 15 others, LAZËR, Goodtime Collective, Jonathan Fann, Unicorn Harvest, Liam O'Connell, Cory Johnson, The John Holmes Book Club, Musical Mathematics, Spheres, GOD.AND.THE.PIGEONS.ARE.ONE, Will Ries, ORL, Knoxx, The Skitzofrantiks and Hijack The Airwaves.