Ovation Tangent T357 Acoustic Guitar w/ CaseNotes pickup fully functional. back port flange has been professionally repaired. includes polyfoam case. A Ovation Tangent T357 Acoustic Guitar w Case in Very Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We always picture any and all accessories too. What you see is what you will get so please check out the pictures!