Interferometry and asteroseismology are both powerful techniques that allow us to measure stellar properties with unprecedented accuracy, advancing understanding of stellar structure and evolution, and informing branches of astronomy from exoplanetary science to Galactic archaeology. Bright stars make the best asteroseismic targets for SONG, as well as the best interferometric targets. The stars with which we can combine both these techniques serve as important tests of stellar models and calibrator stars for less direct methods of determining stellar properties. I will review the current efforts to validate asteroseismic methods using interferometry, how their combination is leading to tests and improvements of stellar models, and future prospects with SONG and the next generation of interferometric instrumentation.