TESS is expected to continue the space-based photometry revolution in asteroseismology over the coming years by detecting oscillations in thousands of subgiants. In this talk I will highlight some key synergies and opportunities for ground-based spectroscopic facilities such as SONG in the TESS era, including the simultaneous detection of oscillations in intensity and velocity, long-term monitoring of Sun-like stars, and radial-velocity follow-up to characterize transiting exoplanets. I will also discuss opportunities for an extended SONG network in combination with next-generation Doppler instruments on 8m-class telescopes to perform asteroseismology of K dwarfs, probing a unique niche of parameter space to improve stellar model physics in cool dwarfs.