Who "are doing more with less," He also liked the previous album, also this new masterpiece will love. The vocal quality of the four men is as usual top notch. Can be found on this album varied arrangements. From the gentle ballad about almost sacral sounds up to the catchy pop song, everything is represented. Also quite critical content, or even those thought-provoking, can be found here again. Even though my bottom line the last album has a tiny bit better, so please is also "The one must not" another a cappella masterpiece in the usual maybebop Quality. If you like the band, will not be disappointed, and all the others will be amazed at what vocal singing can do. From me a strong buy recommendation.