Electro house artist John Dahlbäck has diligently fine-tuned his latest singles package "Uh Oh!," featuring the electric, club-ready singles “Uh Oh!”and “Walls Come Down.” The beat-punching “Uh Oh!” is centered around an unusual chord progression that stands out in today’s musical landscape, while the vocally focused “Walls Come Down” showcases Dahlbäck’s determination for greatness; there were over a hundred versions of “Walls Come Down” before he found the…