Her duets with the contestants have been the highlight each season. I really do want that acoustic album. I also would like some greatest hits type affair where she reimagines her hits as acoustic songs. It's time for The One That Got Away/Thinking of You mashup from the Prismatic Tour as a studio recording. Also Part of Me, Unconditionally, and Firework have had really nice acoustic arrangements. Obviously no one is jonesing to hear Birthday or Last Friday Night as acoustic songs, but there are plenty of album tracks like Ghost, Resilient, Pearl, and I'm Still Breathing that would translate great.