What for me but clearly negative, the instrumented version (CD 2):
I hope this CD is not created at the initiative of the Wise Guys, but the producers because it devalues the otherwise beautiful Wise Guys songs very extreme. The pop a capella music, the Wise Guys distinguished and so successfully made, degenerates in the instrumented version unfortunately any Dudel Pop. Nothing distinguishes these pieces, nothing lifts from other radio-pabulum from (even the intonation of the singer seems to me in some pieces clearly ... listless? As in the a capella version). But I like the Wise Guys, because they stand out from the interchangeability of the other constant background noise, so far this pop versions are counterproductive for me. I hope the Wise Guys use their time in the future more meaningful - like with friends and family, but please do not for pop arrangements.
Overall, there's me for the a capella CD five stars (expectations well met), one for the instrumented. Since me the double CD but only cost four euros more than the pure a capella album, I summed up a total of four stars.