i.O. Underground

Formed in 2019, IOU is fronted by lead singer/guitarist Geoff Grayson, with Casey Kannenberg on guitars/keys/vocals, and Beau Harding on drums/vocals. Colorado-based independent rock trio i.O. Underground has released their sophomore EP, The Underside. The 6-song collection features the previously released singles “Wall,” “What U Do,” and “Once In A Lifetime.” i.O. Underground first introduced this new chapter in their discography with “Wall,” where shimmering keys and ebullient guitars ignite the song’s momentum, culminating in a chantable chorus punctuated by lead vocalist Grayson’s dynamic vocal delivery of “Got my back against the wall. Pushing hard, but I’m not falling down.” On “What U Do,” siren squeals beam out like an extraterrestrial buzz over a skittering beat as bass-y synths warble before climaxing on a guitar-charged refrain. Elsewhere on The Underside EP is the uplifting anthem “Once In A Lifetime,” where a carpe diem chorus takes flight as a piano-laden bridge entrances, and “A Million Miles,” which illuminates the idiosyncrasies of the group’s musical alchemy. Gentle guitar harmonics glisten between the glitchy production as the vocals expand from intimate verses into an infectious refrain, striking a perfect balance.